Abstract

Provided are a directional pattern calculation method and apparatus for a beam pointing adjustable antenna. In the design method, key control factors are quantized, for example, a arrangement and combination modes for a plurality of slot units and wave-controlled codes for conducting and cut-off states of a slot unit, and different combinations of slot units and a far-field directional pattern of a controlled array antenna are evaluated, so that electrical performance indicators of the array antenna can be further evaluated. Weighting calculation is implemented for a directional pattern of a beam pointing adjustable antenna. Key information such as a form of a slot unit and a arrangement and combination modes for slot units can be globally optimized.

IPC Classes  ?

• G01R 29/10 - Radiation diagrams of antennas
• G01R 29/08 - Measuring electromagnetic field characteristics
• G01S 1/02 - Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmittersReceivers co-operating therewith using radio waves
• G01S 3/02 - Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
• H04B 1/72 - Circuits or components for simulating antennas, e.g. dummy antennas
• H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04B 17/391 - Modelling the propagation channel

Abstract

Provided are a method and device for calculating directional pattern of the beam pointing adjustable antenna. In the method, a scattering parameter of a single slot unit is directly measured, and therefore, operability is strong, and the directional pattern of the beam pointing adjustable antenna is calculated without depending on simulation software. In addition, weighted calculation of the directional pattern of the beam pointing adjustable antenna is realized. Key information such as a form of the slot unit and an arrangement and combination mode of the slot units can be globally optimized.

IPC Classes  ?

• H01Q 21/00 - Antenna arrays or systems
• H01Q 13/08 - Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines

Abstract

The present disclosure provides a beam synthesis method for measuring an array antenna. The method includes: obtaining a phase, an amplitude, and related distance values of each antenna unit, where the related distance values include a first distance value and a second distance value; calculating a phase directivity pattern of each antenna unit, and compensating the phase directivity pattern of each antenna unit based on the phase and the first distance value of each antenna unit, to obtain a phase error value of each antenna unit; and synthesizing radio frequency signals of a plurality of antenna units based on the phase, the amplitude, the second distance value, and the phase error value of each antenna unit, to obtain an antenna beam.

IPC Classes  ?

• H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04B 17/12 - MonitoringTesting of transmitters for calibration of transmit antennas, e.g. of amplitude or phase
• H01Q 3/36 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture varying the phase by electrical means with variable phase-shifters
• H01Q 21/08 - Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along, or adjacent to, a rectilinear path

Abstract

The present disclosure provides a phase compensation method and apparatus for measuring an array antenna. The phase compensation method includes: an operation S1 of exporting measured far-field directivity patterns of a first array unit and a second array unit, to establish a coordinate system, so as to determine a spatial geometrical relationship between the first array unit and the second array unit; an operation S2 of determining a wave path difference between the first array unit and the second array unit based on the spatial geometrical relationship between the first array unit and the second array unit; and an operation S3 of performing phase compensation on the second array unit based on the wave path difference.

IPC Classes  ?

• H01Q 3/38 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture varying the phase by electrical means with variable phase-shifters the phase-shifters being digital
• H01Q 3/40 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture varying the phase by electrical means with phasing matrix
• G01R 29/08 - Measuring electromagnetic field characteristics
• H01Q 3/26 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture

Abstract

The present invention discloses a terahertz metamaterial. The terahertz metamaterial includes a substrate and an electromagnetic loss resonant ring structure disposed on the substrate, where an electromagnetic modulation function is realized on a terahertz band by adjusting different structural sizes and square resistance of the electromagnetic loss resonant ring structure. In the present invention, the electromagnetic loss resonant ring structure is disposed on the substrate, and the electromagnetic modulation function is realized on the terahertz band by adjusting the different structural sizes and square resistance of the electromagnetic loss resonant ring structure, thereby simplifying processing steps of a terahertz device, reducing a processing cost, and enabling a terahertz technology to be widely used in the field of electromagnetic communication.

IPC Classes  ?

• G02B 1/00 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements
• C09K 3/00 - Materials not provided for elsewhere
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• C01B 3/02 - Production of hydrogen or of gaseous mixtures containing hydrogen
• H05K 9/00 - Screening of apparatus or components against electric or magnetic fields
• H01Q 17/00 - Devices for absorbing waves radiated from an antenna Combinations of such devices with active antenna elements or systems
• C08J 7/04 - Coating
• C08K 3/04 - Carbon
• G02B 26/00 - Optical devices or arrangements for the control of light using movable or deformable optical elements
• H01Q 1/36 - Structural form of radiating elements, e.g. cone, spiral, umbrella
• H01Q 7/00 - Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Abstract

A thermal insulated helmet, comprising a helmet shell and a thermal barrier coating, the thermal barrier coating comprising a transparent fiber textured layer, a transmissive layer and a reflective layer; the reflective layer is disposed at an outer surface of the helmet shell, the transmissive layer is disposed over the reflective layer, and is capable of transmitting visible light and infrared light; the transparent fiber textured layer is disposed over the transmissive layer. The reflective layer can reflect back visible light and infrared light passing through the fiber textured layer and the transmissive layer, decreasing absorption by the shell of visible light and infrared light, thereby causing the helmet shell to have thermal insulation functionality; it is also possible to provide a three-dimensional graphene heat sink at an inner part of the helmet, causing the helmet to have thermal insulation-thermal dissipation functionality; it is also possible, by means of controlling the color of the transmissive layer, to cause the transmissive layer and the transparent fiber textured layer to impart a fiber textured appearance to the helmet similar to that of a fiber helmet shell, causing the product to have a good-looking, high-end style, satisfying user aesthetic requirements.

IPC Classes  ?

• A42B 3/00 - HelmetsHelmet covers

Abstract

Disclosed are a radiation pattern calculation method and device for a beam-pointing adjustable antenna. The design method obtains a scattering parameter of a single slot by means of direct measurement, has strong operability, and implements calculation of a radiation pattern of a beam-pointing adjustable antenna, without relying on a simulation software; moreover, the weighted calculation of the radiation pattern of the beam-pointing adjustable antenna is implemented; global optimization can be performed on key information such as slot unit forms and combination and arrangement manners of slot units, so that optimizations of selection, arrangement, combination, spacing, etc., of the slot units in antenna design are not needed, so as to focus on the design of the slot unit structure form; in addition, according to the deflection requirements of the beam pointing, each slot unit's beam-pointing adjustment code corresponding to a conduction state or a cut-off state can also be calculated, so as to provide guidance for the adjustment of beam pointing, implementing rapid beam forming and switching.

IPC Classes  ?

• G06F 17/50 - Computer-aided design

Abstract

A measuring antenna array beam synthesis method, the method comprising: acquiring the phase, amplitude, and related distance values of each antenna unit, the related distance values comprising a first distance value and a second distance value, the first distance value being information of the distance between each antenna unit and a turntable centre and the second distance value being information of the distance between each antenna unit and the adjacent antenna unit (S101); calculating a phase directivity pattern of each antenna unit and, on the basis of the phase and first distance value of each antenna unit, compensating the phase directivity pattern of each antenna unit in order to obtain the phase error value of each antenna unit (S103); and, on the basis of the phase, amplitude, second distance value, and phase error value of each antenna unit, synthesising the radio frequency signals of the plurality of antenna units in order to obtain an antenna beam (S105). By means of implementing beam synthesis on far field data tested by a single antenna, the present method can implement equivalent testing of directivity patterns with a transmitter.

IPC Classes  ?

• G01R 29/10 - Radiation diagrams of antennas
• H04B 7/04 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
• H04B 17/00 - MonitoringTesting

Abstract

Provided are a phase compensation method and device for measuring an array antenna, the phase compensation method comprising: step S1, exporting measured far-field patterns of a first array unit and a second array unit to establish a coordinate system so as to determine a spatial-geometric relationship between the first array unit and the second array unit; step S2, determining a wave path difference between the first array unit and the second array unit according to the spatial-geometric relationship between the first array unit and the second array unit; and step S3, performing phase compensation on the second array unit according to the wave path difference. According to the invention, after phase compensation and port zeroing, each array unit can avoid additionally introducing a beam pointing error so as to improve the testing precision regarding the electrical properties of a radome.

IPC Classes  ?

• G01R 29/10 - Radiation diagrams of antennas
• H01Q 3/34 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture varying the phase by electrical means

Abstract

Disclosed by the present invention are a method and device for calculating the pattern of a beam pointing adjustable antenna. The present design method quantifies key controlling factors such as arrangement and combination modes of multiple slot units and wave control codes of the on and off states of the slot units, and evaluates far field patterns of array antennas having different slot unit combinations and adjustments, so as to be able to evaluate various electrical performance indicators of the array antenna; The pattern of the beam pointing adjustable antenna is subjected to weighted calculation. It is possible to globally optimize key information comprising slot unit form and slot unit combination and arrangement modes, thus greatly reducing the amount of optimization of slot unit selection, arrangement, combination and spacing in antenna design so as to focus on the design of the slot unit structure form. In addition, the wave control codes of the on and off states corresponding to each slot unit may be calculated according to beam pointing deflection requirements, so as to provide guidance for the beam pointing adjustment, thereby achieving rapid beam forming and switching.

IPC Classes  ?

• G06F 17/50 - Computer-aided design

Abstract

Method and device for evaluating the electrical performance of an antenna cover. The method for evaluating the electrical performance of the antenna cover comprises: acquiring electromagnetic parameter information of an antenna and parameter information of an antenna cover; calculating far-field information of the antenna and far-field information of an antenna system on the basis of the electromagnetic parameter information of the antenna and of the parameter information of the antenna cover; and calculating electrical performance parameter information of the antenna cover on the basis of the far-field information of the antenna and of the far-field information of the antenna system. By means of the actual measurement of the electromagnetic parameter information of the antenna and of the parameter information of the antenna cover, the calculation of the far-field information of the antenna and of the far-field information of the antenna system, and the electrical performance parameter information of the antenna cover thus produced, without relying on a precise digital model of the antenna or when the antenna system is of increased complexity, calculation precision is ensured, the operability of the evaluation of the electrical performance of the antenna cover is greatly increased, and calculation precision is effectively increased.

IPC Classes  ?

• G01R 29/10 - Radiation diagrams of antennas
• G06F 30/20 - Design optimisation, verification or simulation
• G01R 29/08 - Measuring electromagnetic field characteristics
• H01Q 1/42 - Housings not intimately mechanically associated with radiating elements, e.g. radome

Abstract

Embodiments of the present invention provides a method for preparing an insulating tape, comprising: mixing polyester polyol oxide, flame retardant, talcum powder, and carbon black to obtain a resin mixture to obtain a resin mixture; adding a curing agent to the resin mixture to obtain a cured resin mixture; rolling the cured resin mixture into a coil; and attaching PET films to the upper and lower surfaces of the coil, and performing slicing to obtain the insulating tape. The insulating tape prepared by means of the method can be used for insulation protection in the field of high voltage electricity and electrical appliances, can implement waterproofness, insulation and voltage breakdown protection of the electrical appliances, is simple to construct, and can achieve long-term protection.

IPC Classes  ?

• C09J 7/00 - Adhesives in the form of films or foils
• C09J 167/00 - Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chainAdhesives based on derivatives of such polymers
• C09J 183/00 - Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon onlyAdhesives based on derivatives of such polymers
• C08L 7/00 - Compositions of natural rubber

Abstract

A metamaterial manufacturing method and a metamaterial manufactured thereby. The manufacturing method comprises the following steps: a ) separately adding at least one of wave absorber powder and metal electrode powder, and insulating substrate powder to thermoplastic resin to mix well as a raw material; b) forming, according to metamaterial micro-structure design, the raw material into micro-structured unit rod materials by using a coextrusion process; and c) arranging the micro-structured unit rod materials according to a periodic micro-structure arrangement mode, putting the arranged micro-structured unit rod materials in an extruder, and coextruding periodically arranged metamaterial micro-structures by using the extruder. A metamaterial can be manufactured by means of the method. By combining a polymer coextrusion process and a metamaterial technology, the solution provides a ceramic-based metamaterial manufacturing method having high efficiency, low iteration cost, and high yield rate. A thinner and more efficient wave-absorbing metamaterial is obtained by means of a coextrusion-cofiring process.

IPC Classes  ?

• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

Abstract

ixy+iixy+i2532425324255 being 2%-4% by mass. The microwave dielectric ceramic has an excellent dielectric constant, low dielectric loss, and relatively low sintering temperature.

IPC Classes  ?

• C04B 35/44 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminates
• C04B 35/457 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zinc, tin or bismuth oxides or solid solutions thereof with other oxides, e.g. zincates, stannates or bismuthates based on tin oxides or stannates
• C04B 35/443 - Magnesium aluminate spinel
• C04B 35/16 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on silicates other than clay

Abstract

A rusty coating that converts rust and is durable, comprising 10-40% of modified epoxy resin, 8-15% of alkyd resin, 5-12% of phytic acid, 5-10% of phosphoric acid, 10-30% of zinc phosphate, 5-10 of diatomite, 5-10% of gray micaleous iron oxide, 1-2% of dispersant, 1-3% of drier, 3-8% of ethanol, and 3-8% of isopropanol.

IPC Classes  ?

• C09D 163/00 - Coating compositions based on epoxy resinsCoating compositions based on derivatives of epoxy resins
• C09D 167/08 - Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
• C09D 5/08 - Anti-corrosive paints
• C23C 22/00 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals

Abstract

A composite carrier, a preparation method therefor and application thereof. The composite material comprises: a mechanical carrier; an adsorption carrier; and a resin liquid. The mass ratio of the mechanical carrier to the adsorption carrier to the resin liquid is 10-20:0.1-20:0.1-20. The composite carrier prepared by means of the method can implement efficient removal of benzene-based pollutants by a composite carrier catalyst, and also effectively prolong the service life of the catalyst.

IPC Classes  ?

• B01J 20/08 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group comprising aluminium oxide or hydroxideSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group comprising bauxite
• B01J 20/10 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/32 - Impregnating or coating
• B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
• B01D 53/46 - Removing components of defined structure

Abstract

The present invention relates to an antenna, which can improve a front-to-rear ratio and cross-polarization isolation without changing a structure of a reflection panel. The antenna includes an antenna element and a reflection panel. The antenna element is disposed on the reflection panel. The antenna further includes a wave-absorbing material layer. The wave-absorbing material layer is disposed on one side of an outer surface, back to the antenna element, of the reflection panel.

IPC Classes  ?

• H01Q 19/10 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
• H01Q 1/52 - Means for reducing coupling between antennas Means for reducing coupling between an antenna and another structure
• H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
• H01Q 19/17 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
• H01Q 17/00 - Devices for absorbing waves radiated from an antenna Combinations of such devices with active antenna elements or systems
• H01Q 21/06 - Arrays of individually energised antenna units similarly polarised and spaced apart
• H01Q 1/42 - Housings not intimately mechanically associated with radiating elements, e.g. radome
• H01Q 25/00 - Antennas or antenna systems providing at least two radiating patterns

Abstract

Disclosed are a method for preparing a composite material gas intake passage and a composite material gas intake passage, wherein the preparation method comprises the following steps: a) laying at least one layer of a prepreg on a female mould (1) to form a prepreg layer (5); b) placing a gasbag (3) in the prepreg layer (5), and completing mould assembly; c) inflating the gasbag (3) to a predetermined pressure, and pressing the prepreg layer (5) between the outer surface of the gasbag (3) and the inner surface of the female mould (1); d) subjecting the entire mould assembled in step c) to a curing treatment; and e) relieving the pressure in the gasbag (3) and opening the mould to release the prepared composite material gas intake passage green body. The composite material gas intake passage prepared by means of the preparation method can be applied to an aerostatic vehicle such as an air boat, has the advantages of a light mass, a low degree of processing difficulty, strong weatherability, etc., and can improve the continued flight capability of the aerostatic vehicle.

IPC Classes  ?

• B29C 70/34 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression
• B29C 70/54 - Component parts, details or accessoriesAuxiliary operations

Abstract

Disclosed are a wave absorbing material and a preparation method therefor, and the preparation method comprises: mixing a raw rubber, a filler, a vulcanising agent and an auxiliary agent into a mixture in a mixing step, and then hot pressing moulding the mixture in a hot pressing step so as to obtain the wave absorbing material. The raw rubber is any of an epoxy resin, polyurethane, an ethylene propylene diene monomer, a silicone rubber and a butyl rubber. The filler comprises at least one of high electromagnetic loss materials such as manganese-zinc ferrite, cobalt-nickel ferrite, an iron-aluminium-silicon alloy and an iron-aluminium-chromium alloy, etc.

IPC Classes  ?

• C08L 21/00 - Compositions of unspecified rubbers
• C08L 9/00 - Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
• C08L 83/00 - Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon onlyCompositions of derivatives of such polymers
• C08L 75/04 - Polyurethanes
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
• C08K 3/22 - OxidesHydroxides of metals

Abstract

Disclosed are a composite material gas intake passage and a preparation method therefor, and an air vehicle, wherein the preparation method comprises the following steps: a) laying at least one layer of a prepreg on the surface of a mould (1) to form at least one prepreg layer; b) subjecting the prepreg layer to a curing treatment; and c) opening the mould to release a prepared composite material gas intake passage green body. The preparation method has a simple manufacture process and a high manufacture efficiency. The composite material gas intake passage prepared by means of the preparation method can be applied to an air vehicle such as an air boat, has the advantages of a light mass, a low degree of processing difficulty, a strong weatherability, etc., while maintaining a structural strength to meet normal use requirements, and can improve the continued flight capability of an air vehicle.

IPC Classes  ?

• B29C 70/34 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression
• B29C 70/54 - Component parts, details or accessoriesAuxiliary operations

Abstract

Disclosed are a wave-absorbing structural member and a manufacturing method therefor, wherein the manufacture method comprises: forming a combined layer on a surface of a mould, wherein the combined layer comprises at least one layer of honeycomb sandwich; forming a carbon fibre layer on the combined layer; and de-moulding same to obtain the wave-absorbing structural member. The manufacturing of the wave-absorbing structural member is completed on the surface of the mould, and the wave-absorbing structural member roughly comprises a combined layer and a carbon fibre layer, wherein the combined layer comprises at least one layer of honeycomb sandwich for providing a certain structural strength and a wave-absorbing property, and the carbon fibre layer formed on the combined layer can further provide a stronger structural strength; and at the same time, carbon fibres are lighter in terms of dead weight than traditional high-strength materials, enabling the resulting wave-absorbing structural member to meet high structural strength requirements while maintaining a lighter mass, and when applied to fields that require lightweight designs, such as the field of air vehicles, the overall product can attain a higher work efficiency.

IPC Classes  ?

• B32B 37/00 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
• B29C 70/34 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression

Abstract

The present invention discloses a band-pass filtering structure and an antenna housing. The band-pass filtering structure includes a functional layer structure, where the functional layer structure includes two or more first dielectric layers and a second dielectric layer that is disposed between two first dielectric layers, a plurality of first conductive geometric structures displayed in a periodical arrangement are disposed on the first dielectric layer, a plurality of second conductive geometric structures displayed in a periodical arrangement are disposed on the second dielectric layer, the first conductive geometric structure includes two crossly-disposed conductive strips, and the second conductive geometric structure is a closed conductive geometric structure. The present invention resolves a technical problem that filtering performance of an existing band-pass filter is poor due to unreasonable structural design.

IPC Classes  ?

• H01P 1/20 - Frequency-selective devices, e.g. filters
• H01P 1/203 - Strip line filters
• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
• H01Q 1/42 - Housings not intimately mechanically associated with radiating elements, e.g. radome

Abstract

Disclosed are a method for preparing a wave-absorbing material, and a wave-absorbing coating. The preparation method comprises the steps of: forming a mixed solution comprising reaction raw materials; subjecting the mixed solution to a liquid phase synthesis reaction; acid-washing a reaction product resulting from the reaction to remove impurities; after removing impurities by means of pickling, cleaning and drying same to obtain a first powder; and subjecting the first powder to a hydrothermal reduction reaction to obtain a second powder, wherein the particles of the first powder and the particles of the second powder are both in the form of flakes, and the second powder is a wave-absorbing material. By means of the method, the purity of the wave-absorbing material can be increased, and the uniformity of the shape and size of the wave-absorbing material can be improved.

IPC Classes  ?

• B22F 9/22 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
• B22F 9/20 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from solid metal compounds
• C09D 163/00 - Coating compositions based on epoxy resinsCoating compositions based on derivatives of epoxy resins
• C09D 5/32 - Radiation-absorbing paints

Abstract

Method and device for evaluating the electrical performance of an antenna cover. The method for evaluating the electrical performance of the antenna cover comprises: acquiring electromagnetic parameter information of an antenna and parameter information of an antenna cover; calculating far-field information of the antenna and far-field information of an antenna system on the basis of the electromagnetic parameter information of the antenna and of the parameter information of the antenna cover; and calculating electrical performance parameter information of the antenna cover on the basis of the far-field information of the antenna and of the far-field information of the antenna system. By means of the actual measurement of the electromagnetic parameter information of the antenna and of the parameter information of the antenna cover, the calculation of the far-field information of the antenna and of the far-field information of the antenna system, and the electrical performance parameter information of the antenna cover thus produced, without relying on a precise digital model of the antenna or when the antenna system is of increased complexity, calculation precision is ensured, the operability of the evaluation of the electrical performance of the antenna cover is greatly increased, and calculation precision is effectively increased.

IPC Classes  ?

• G06F 17/50 - Computer-aided design

Abstract

The utility model provides an antenna housing, an antenna structure and an antenna system. The antenna housing comprises: a housing body and a wave absorbing part. An inner wall surface of the housing body is coated with the wave absorbing part so as to attenuate the echo intensity of electromagnetic wave which is transmissive to the housing body at the wave absorbing part. The utility model solves the problem in the prior art of poor working stability of the antenna system.

IPC Classes  ?

• H01Q 1/42 - Housings not intimately mechanically associated with radiating elements, e.g. radome
• H01Q 17/00 - Devices for absorbing waves radiated from an antenna Combinations of such devices with active antenna elements or systems

Abstract

A method for preparing a thermally-conductive graphene coating and a thermally-conductive coating prepared thereby. The method comprises: adding a two-component polyurethane resin, a silane coupling agent, and a first diluent to a stirring container, and stirring same to obtain a resin mixture; defoaming the resin mixture; adding graphene and a polyurethane resin to a second dilute and performing ultrasonic treatment and uniform dispersion on the mixture to obtain a graphene dispersion; and mixing the resin mixture and the graphene dispersion, and performing grinding and dispersion on the mixture to obtain a thermally-conductive graphene coating.

IPC Classes  ?

• C09D 175/04 - Polyurethanes
• C09D 7/12 - Other additives

Abstract

The invention provides a heat-dissipating type conductive silver paste and a preparation method therefor. The heat-dissipating type conductive silver paste is prepared from 100 parts of a resin mixture, 100 to 500 parts of silver powder and 10 to 100 parts of graphene according to parts by mass. Specifically, the resin mixture is obtained by mixing a resin, a curing agent and a silane coupling agent in proportion, and the resin mixture is degassed and then mixed with silver powder and graphene. By doping graphene with high thermal conductivity into the conductive silver paste, heat dissipation property of the conductive silver paste is greatly improved, and the defect that the existing silver paste has poor heat dissipation property is solved. The heat-dissipatingl conductive silver paste provided is mainly used for conductive bonding among objects and can improve the heat dissipation property of the adhesive, and can be widely used in the fields such as electronics, information, electroplating and so on.

IPC Classes  ?

• C09J 9/02 - Electrically-conducting adhesives
• C09J 163/00 - Adhesives based on epoxy resinsAdhesives based on derivatives of epoxy resins
• C09J 163/02 - Polyglycidyl ethers of bis-phenols

Abstract

A female moulding method for a composite material workpiece, comprising the following steps: S10: dividing a female mould (31) having a narrow inner cavity into a plurality of female mould blocks; S20: laying an interlacing composite material layer (32) on each female mould block, the laying area of the composite material layer (32) being greater than the area of the female mould block; S30: assembling the plurality of female mould blocks, the parts of the composite material layer (32) protruding from the plurality of female mould blocks mutually overlapping; and S40: curing the composite material layer (32) to form a composite material workpiece. Using the present moulding method reduces the difficulty of laying a female mould, and greatly improves the strength of the workpiece.

IPC Classes  ?

• B29C 70/34 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression
• B29C 70/54 - Component parts, details or accessoriesAuxiliary operations

Abstract

Provided is a dual-polarized antenna, capable of improving a front-to-back ratio under the condition of not changing an antenna structure remarkably. The dual-polarized antenna comprises an antenna oscillator and a reflection plate. The antenna oscillator is arranged on the reflection plate. The antenna further comprises a wave absorbing material layer. The wave absorbing material layer is arranged between the antenna oscillator and the reflection plate.

IPC Classes  ?

• H01Q 17/00 - Devices for absorbing waves radiated from an antenna Combinations of such devices with active antenna elements or systems
• H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction

Abstract

The present invention relates to an antenna, capable of improving a front-to-back ratio and cross polarization isolation under the condition of not changing the structure of a reflection plate. The antenna comprises an antenna oscillator and a reflection plate. The antenna oscillator is arranged on the reflection plate. The antenna further comprises a wave-absorbing material layer. The wave-absorbing material layer is arranged on one side, facing away from an outer surface of the antenna oscillator, of the reflection plate.

IPC Classes  ?

• H01Q 17/00 - Devices for absorbing waves radiated from an antenna Combinations of such devices with active antenna elements or systems
• H01Q 19/17 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements

Abstract

A wave-absorbing metamaterial, an antenna cover and an antenna system, capable of realizing reflectivity reduction under the conditions of vertical incidence and large-angle incidence. The wave-absorbing metamaterial comprises a magnetic electromagnetic wave-absorbing material layer (2) and a conductive geometric structure layer combined with the magnetic electromagnetic wave-absorbing material layer (2). The conductive geometric structure layer is composed of a plurality of conductive geometric structure units (1) arranged in sequence. Each of the conductive geometric structure units (1) comprises a non-closed annular conductive geometric structure. Two stripe-shaped structures (10) arranged in parallel relatively are arranged at an opening of the annular conductive geometric structure.

IPC Classes  ?

• H01Q 17/00 - Devices for absorbing waves radiated from an antenna Combinations of such devices with active antenna elements or systems

Abstract

A metamaterial filtering structure, a radome, and an antenna system. The metamaterial filtering structure comprises: a substrate (10) and at least three conductive geometric layers (20), wherein the at least three conductive geometric layers (20) are disposed on the substrate (10) and comprise a first conductive geometric layer (21), a second conductive geometric layer (22), and a third conductive geometric layer (23). A first conductive geometric unit (110a) of the first conductive geometric layer (21) has multiple ring-like conductive members (210) which are not connected to each other; a second conductive geometric unit (110b) of the second conductive geometric layer (22) has multiple E-shaped conductive members (220) which are disposed at intervals, wherein each E-shaped conductive members (220) has a middle extension segment (221) and two side extension segments (222); a third geometric unit (110c) of the third conductive geometric layer (23) has at least one ring-like auxiliary conductive member (230). The technical solution can solve the problem that the antenna material is unduly thick and the normal operation of electromagnetic equipment is easily affected by the wave-transparent property out of the working frequency range.

IPC Classes  ?

• H01Q 1/42 - Housings not intimately mechanically associated with radiating elements, e.g. radome

Abstract

Disclosed are a metamaterial structure and a radome and an antenna system including the metamaterial structure. The metamaterial structure comprises: a first medium substrate and a plurality of conductive geometric structures located on the first medium substrate, each conductive geometric structure being a centrosymmetric distribution pattern, adjacent conductive geometric structures being separated from one another. Changes in the shapes and sizes of the conductive geometric structures cause changes in electromagnetic wave response characteristics. The radome not only improves working frequency band electromagnetic wave penetration performance, but also acts as a filter to suppress non-working frequency band electromagnetic wave penetration, thereby improving the working signal-to-noise ratio of an antenna.

IPC Classes  ?

• H01Q 1/42 - Housings not intimately mechanically associated with radiating elements, e.g. radome
• H01Q 21/00 - Antenna arrays or systems

Abstract

Disclosed are a band-pass filtering structure and an antenna housing. The band-pass filtering structure comprises a functional layer structure; the functional layer structure comprises more than two first dielectric layers, and a second dielectric layer arranged between the two first dielectric layers; each first dielectric layer is provided with a plurality of first conductive geometric structures arranged periodically; the second dielectric layer is provided with a plurality of second conductive geometric structures arranged periodically; each first conductive geometric structure comprises two crossed bus bars; and the second conductive geometric structure is a closed conductive geometric structure. The present invention solves the technical problem that an existing band-pass filter has low filtering capability due to unreasonable structure design.

IPC Classes  ?

• H01P 1/203 - Strip line filters
• H01Q 1/42 - Housings not intimately mechanically associated with radiating elements, e.g. radome

Abstract

A metamaterial, comprising a single metamaterial layer, wherein the single metamaterial layer comprises a dielectric substrate (3), a conductive geometry layer (4) attached to the dielectric substrate (3), and at least one through hole unit penetrating through the conductive geometry layer (4), wherein the through hole unit comprises two through holes (1, 2, 5, 6, 7, 8) of different sizes arranged in parallel in a two-dimensional direction of a plane, and centres of all through holes (1, 2, 5, 6, 7, 8) are arranged at equal intervals. By adjusting structure parameters of microstructures by coupling and superposing different microstructures, the metamaterial achieves multi resonance or wide resonance within a Terahertz range; and meanwhile, the metamaterial composed of the single metamaterial layer has the advantages of being light in weight, low in cost and easy to process, can save costs compared with the design of a multilayer material, thereby effectively solving the problems in the prior art that it is difficult to process a Terahertz device and the costs are high, and has an actual application value.

IPC Classes  ?

• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

Abstract

A wave-absorbing metamaterial. The wave-absorbing metamaterial comprises: a substrate (11) and an electromagnetic loss material (12) attached to a surface of the substrate (11), wherein the electromagnetic loss material (12) has a hole structure (13). A Terahertz electromagnetic modulation function can be achieved by adjusting different structure sizes and sheet resistance of the electromagnetic loss material. The wave-absorbing metamaterial is a metamaterial achieving resonant electromagnetic loss using different sizes of microstructures on the material having electromagnetic loss performance. The wave-absorbing metamaterial based on a Terahertz metamaterial having an electromagnetic loss hole structure has the advantages of being light in weight, low in cost and easy to process, has adjustable loss compared with the design of a Terahertz metamaterial formed by a loss material without microstructures, and has an actual application value.

IPC Classes  ?

• H01Q 17/00 - Devices for absorbing waves radiated from an antenna Combinations of such devices with active antenna elements or systems

Abstract

Disclosed is a Terahertz metamaterial. The Terahertz metamaterial comprises a substrate; and an electromagnetic loss resonant ring structure arranged on the substrate, wherein a Terahertz electromagnetic modulation function is achieved by adjusting different structure sizes and sheet resistance of the electromagnetic loss resonant ring structure. By means of the present invention, by arranging an electromagnetic loss resonant ring structure on a substrate and adjusting different structure sizes and sheet resistance of the electromagnetic loss resonant ring structure, a Terahertz electromagnetic modulation function is achieved, thereby achieving the effects of simplifying processing steps of a Terahertz device and reducing processing costs, and thus achieving the effect of enabling Terahertz technology to be widely applied to the field of electromagnetic communications.

IPC Classes  ?

• H01Q 17/00 - Devices for absorbing waves radiated from an antenna Combinations of such devices with active antenna elements or systems
• H05K 9/00 - Screening of apparatus or components against electric or magnetic fields
• C09K 3/00 - Materials not provided for elsewhere
• C01B 3/02 - Production of hydrogen or of gaseous mixtures containing hydrogen
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites

Abstract

Disclosed are a reflecting antenna and a design method therefor. The reflecting antenna comprises: a feed source (10) which is used for transmitting electromagnetic waves; a secondary reflection curved surface (20) which is located at one side of a radiation aperture of the feed source and is used for forming the electromagnetic waves, and a primary reflection panel (30) which is located at the other side of the radiation aperture of the feed source and is used for modulating the formed electromagnetic waves, so that the modulated electromagnetic waves have the same phase. The present invention solves the technical problem of a low utilization rate of a flat reflection array panel of an antenna in the prior art.

IPC Classes  ?

• H01Q 19/18 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
• H01Q 15/14 - Reflecting surfacesEquivalent structures
• H01Q 15/16 - Reflecting surfacesEquivalent structures curved in two dimensions, e.g. paraboloidal

Abstract

The present invention provides an artificial microstructure. The artificial microstructure includes at least three split rings. The at least three split rings surround and embed in turn. Each split ring is formed by a wire which is made of conductive material, with two terminals of the wire towards each other to form an opening of the corresponding split ring. The present invention also provides an artificial electromagnetic material using the artificial microstructure. The artificial electromagnetic material with the artificial microstructure can achieve the function of broadband wave-absorbing.

IPC Classes  ?

• H01Q 17/00 - Devices for absorbing waves radiated from an antenna Combinations of such devices with active antenna elements or systems
• A61N 1/16 - Screening or neutralising undesirable influences from atmospheric or terrestrial radiation or fields
• H05K 9/00 - Screening of apparatus or components against electric or magnetic fields
• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

Abstract

The present invention relates to a communication antenna, an antenna system and a communication device. The communication antenna may comprise a first radiator, the first radiator comprising a first substrate and a first radiation sheet disposed on the first substrate, the first radiation sheet having a first feed portion and a tangent angle, and a radiation surface of the first radiation sheet being a curved surface; and a second radiator, the second radiator comprising a second substrate and a second radiation sheet disposed on the second substrate, the second radiation sheet having a second feed portion and a tangent angle, a radiation surface of the second radiation sheet being a curved surface, and the second substrate of the second radiator being stacked upon the first radiation sheet of the first radiator.

IPC Classes  ?

• H01Q 5/00 - Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
• H01Q 9/04 - Resonant antennas

Abstract

The present invention relates to a communication antenna, an antenna system containing the antenna, and a communication device containing the antenna. The communication antenna comprises: a first radiator, the first radiator comprising a first substrate and a first radiation sheet disposed on the first substrate, and the first radiation sheet having a first feed portion and a third feed portion; and a second radiator, the second radiator comprising a second substrate and a second radiation sheet disposed on the second substrate, and the second radiation sheet having a second feed portion and a fourth feed portion, wherein a radiation surface of the first radiation sheet and a radiation surface of the second radiation sheet are both curved surfaces, the first radiation sheet and the second radiation sheet each have a tangent angle, and the second radiator and the first radiator are stacked.

IPC Classes  ?

• H01Q 5/00 - Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
• H01Q 9/04 - Resonant antennas

Abstract

The present invention provides a communication antenna and a communication antenna system, which aim to resolve the technical problem of oversize of an antenna part in an existing communication system. The antenna comprises a metal ground, a first substrate, a first metal radiation sheet in a hexagonal shape formed by cutting a pair of diagonal angles from a rectangular metal radiation sheet, a second substrate and a second metal radiation sheet in a hexagonal shape formed by cutting a pair of diagonal angles from another rectangular metal radiation sheet, which are stacked from bottom to top in sequence. The two edges where non-right angles of the first metal radiation sheet are located are corresponding to the pair of right angles of the second metal radiation sheet; and the size of the first metal radiation sheet is larger than that of the second metal radiation sheet. On one hand, the present invention reduces the size of a system and improves the integration level of the system, and on the other hand, one antenna can be used for realizing dual polarization dual-band communication.

IPC Classes  ?

• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
• H01Q 15/24 - Polarising devicesPolarisation filters
• H01Q 1/50 - Structural association of antennas with earthing switches, lead-in devices or lightning protectors

Abstract

The present invention relates to an antenna, an antenna system using the antenna, and a communication device. The antenna comprises a first substrate, a second substrate, a first radiation sheet and a second radiation sheet, wherein the first radiation sheet is arranged on the first substrate, the second substrate is arranged on the first radiation sheet, the second radiation sheet is arranged on the second substrate, the first radiation sheet is provided with a first feed part and a second feed part which are respectively arranged on the first axis of symmetry and the second axis of symmetry of the first radiation sheet, and the second radiation sheet is provided with a third feed part and a forth feed part which are respectively arranged on the first axis of symmetry and the second axis of symmetry of the second radiation sheet. The first substrate, the second substrate, the first radiation sheet and the second radiation sheet are all cambered surfaces.

IPC Classes  ?

• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
• H01Q 5/335 - Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
• H01Q 15/24 - Polarising devicesPolarisation filters

Abstract

The present invention provides an antenna, comprising a first substrate, a second substrate, a first radiation sheet and a second radiation sheet, wherein the first radiation sheet is arranged on the first substrate, the second substrate is arranged on the first radiation sheet, the second radiation sheet is arranged on the second substrate, the first radiation sheet is provided with a first feed part and a second feed part which are respectively arranged on the horizontal axis of symmetry and the vertical axis of symmetry of the first radiation sheet, the second radiation sheet is provided with a third feed part and a forth feed part which are respectively arranged on the horizontal axis of symmetry and the vertical axis of symmetry of the second radiation sheet, and either of the first radiation sheet or the second radiation sheet is circular.

IPC Classes  ?

• H01Q 5/35 - Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using two or more simultaneously fed points

Abstract

The present invention provides an antenna, comprising a first substrate, a second substrate, a first radiation sheet and a second radiation sheet, wherein the first radiation sheet is arranged on the first substrate, the second substrate is arranged on the first radiation sheet, the second radiation sheet is arranged on the second substrate, one of the first radiation sheet and the second radiation sheet is provided with a first feed part and a second feed part which are respectively arranged on the horizontal axis of symmetry and the vertical axis of symmetry of the radiation sheet, the other of the first radiation sheet and the second radiation sheet is provided with a third feed part and a fourth feed part which are arranged on the horizontal axis of symmetry of the radiation sheet, and is further provided with a fifth feed part and a sixth feed part which are arranged on the vertical axis of symmetry of the radiation sheet, and either of the first radiation sheet or the second radiation sheet is circular.

IPC Classes  ?

• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support

Abstract

The present invention provides an antenna, comprising a first substrate, a second substrate, a first radiation sheet and a second radiation sheet, wherein the first radiation sheet is disposed on the first substrate, the second substrate is disposed on the first radiation sheet, the second radiation sheet is disposed on the second substrate, edges of the first radiation sheet and the second radiation sheet are both provided with notches, and the first radiation sheet and the second radiation sheet respectively comprise a first feed part and a second feed part.

IPC Classes  ?

• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support

Abstract

The present invention provides an antenna, an antenna system and a communication device, wherein the antenna comprises a first substrate, a second substrate, a first radiation sheet and a second radiation sheet, the first radiation sheet is arranged on the first substrate, the second substrate is arranged on the first radiation sheet, the second radiation sheet is arranged on the second substrate, and the first radiation sheet and the second radiation sheet are both provided with chamfers for generating circular polarization. By implementing the present invention, circular polarization of a plurality of frequency bands can be realized without a complicated structure.

IPC Classes  ?

• H01Q 1/36 - Structural form of radiating elements, e.g. cone, spiral, umbrella
• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support

Abstract

The present invention relates to an antenna, an antenna system using the antenna, and a communication device. The antenna comprises a first substrate, a second substrate, a first radiation sheet and a second radiation sheet, wherein the first radiation sheet is arranged on the first substrate, the second substrate is arranged on the first radiation sheet, the second radiation sheet is arranged on the second substrate, one of the first radiation sheet and the second radiation sheet is provided with a first feed part and a second feed part which are respectively arranged on a second axis of symmetry of the radiation sheet and a third feed part and the fourth feed part which are respectively arranged on a first axis symmetry of the radiation sheet, and the other of the first radiation sheet and the second radiation sheet is provided with a fifth feed part and a sixth feed part which are respectively arranged on a second axis of symmetry of the radiation sheet and a seventh feed part and an eighth feed part which are respectively arranged on a first axis of symmetry of the radiation sheet. The first substrate, the second substrate, the first radiation sheet and the second radiation sheet are all cambered surfaces.

IPC Classes  ?

• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
• H01Q 5/335 - Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
• H01Q 15/24 - Polarising devicesPolarisation filters

Abstract

The present invention provides an antenna, comprising a first substrate, a second substrate, a first radiation sheet and a second radiation sheet, wherein the first radiation sheet is disposed on the first substrate, the second substrate is disposed on the first radiation sheet, the second radiation sheet is disposed on the second substrate, one of the first radiation sheet and the second radiation sheet is provided with a notch, and is provided with a first feed part, the other of the first radiation sheet and the second radiation sheet is provided with a second feed part and a third feed part, and the second feed part and the third feed part are respectively located on the horizontal axis of symmetry and the vertical axis of symmetry of the radiation sheet.

IPC Classes  ?

• H01Q 5/307 - Individual or coupled radiating elements, each element being fed in an unspecified way

Abstract

The present invention provides an antenna, comprising a first substrate, a second substrate, a first radiation sheet and a second radiation sheet, wherein the first radiation sheet is disposed on the first substrate, the second substrate is disposed on the first radiation sheet, the second radiation sheet is disposed on the second substrate, the first radiation sheet and the second radiation sheet are both provided with notches, and the first radiation sheet and the second radiation sheet respectively comprise a first feed part and a second feed part.

IPC Classes  ?

• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support

Abstract

The present invention provides an artificial microstructure. The artificial microstructure includes at least three split rings. The at least three split rings surround and embed in turn. Each split ring is formed by a wire which is made of conductive material, with two terminals of the wire towards each other to form an opening of the corresponding split ring. The present invention also provides an artificial electromagnetic material using the artificial microstructure. The artificial electromagnetic material with the artificial microstructure can achieve the function of broadband wave-absorbing.

IPC Classes  ?

• H01Q 17/00 - Devices for absorbing waves radiated from an antenna Combinations of such devices with active antenna elements or systems
• A61N 1/16 - Screening or neutralising undesirable influences from atmospheric or terrestrial radiation or fields
• H05K 9/00 - Screening of apparatus or components against electric or magnetic fields
• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

Abstract

An artificial microstructure used in artificial electromagnetic material includes a first line segment and a second line segment. The second line segment is perpendicular to the first line segment. The first line segment and the second line segment intersect with each other to form a cross-type structure. The present disclosure further relates to an artificial electromagnetic material using the artificial microstructure.

IPC Classes  ?

• H01Q 15/02 - Refracting or diffracting devices, e.g. lens, prism
• H01Q 15/24 - Polarising devicesPolarisation filters
• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

Abstract

Disclosed is an antenna device. The device comprises: a dielectric substrate, comprising a first surface and a second surface opposite the first surface; and an antenna unit, comprising a first resonance frequency band unit and a second resonance frequency band unit, and disposed on the surface of the dielectric substrate. Compared with the prior art, the dual-band antenna resonates at frequency bands of 880-960 MHz and 1710-1880 MHz, and the dielectric constant and dielectric loss of the dielectric substrate are lowered by introducing polar and non-polar polymers, so as to reduce the power loss and improve the energy conversion efficiency of the antenna device. In addition, comprehensive performance such as the gain of the antenna device is further improved by antenna selection and optimizing the antenna selection design.

IPC Classes  ?

• H01Q 1/12 - SupportsMounting means

Abstract

An artificial microstructure comprises two “I” shaped metal wire structures. The two “I” shaped metal wire structures are separated to each other. The present invention also discloses an artificial electromagnetic material using the artificial microstructures. The artificial electromagnetic material has high resonance frequency, wide effective frequency band and has a wide application range.

IPC Classes  ?

• B81B 7/00 - Microstructural systems
• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

Abstract

An artificial electromagnetic material includes at least one material sheet. Each material sheet includes a substrate and a plurality of artificial microstructures attached to the substrate. Each substrate is virtually divided into multiple of substrate units arranged into an array. A pair of artificial microstructures is attached to each substrate. The pair of artificial microstructures includes a first artificial microstructure and a second artificial microstructure with different shapes. The dielectric constant of artificial electromagnetic materials gradually increases from zero in a certain frequency range, therefore the material has a low dielectric constant in the certain frequency range and can meet some needs of special situation.

IPC Classes  ?

• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
• H01Q 15/02 - Refracting or diffracting devices, e.g. lens, prism

Abstract

The present invention provides an artificial microstructure including a first metal wire, a second metal wire parallel to the first metal wire, at least one first metal wire branch and at least one second metal wire branch. The at least one first metal wire branch and the at least one second metal wire branch are distributed in an interlacement arrangement. One end of the at least one first metal wire branch is connected to the first metal wire; the other end is a free end facing towards the second metal wire. One end of the at least one second metal wire branch is connected to the second metal wire, and the other end of the at least one second metal wire is a free end facing towards the first metal wire. The present invention also discloses a metamaterial with the artificial microstructures.

IPC Classes  ?

• H01Q 1/00 - Details of, or arrangements associated with, antennas
• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

Abstract

Disclosed are a microwave antenna and a communication device. The microwave antenna comprises a feed source, a first metamaterial tightly clinging to an aperture surface of the feed source and having a shape adapted to the aperture surface of the feed source, a second metamaterial disposed closely adjacent to lower and upper surfaces of the first metamaterial, and a housing which forms an enclosed cavity together with the first metamaterial and the second metamaterial. A surface of the housing opposite the first metamaterial and the second metamaterial is a metal reflective surface. Central axes of the feed source, the first metamaterial and the metal reflective surface coincide with each other. In the present invention, an electromagnetic wave is scattered by the first metamaterial and reflected by the metal reflective surface, and then radiated as a plane wave after passing through the second metamaterial. The thickness of the microwave antenna is reduced by means of the first metamaterial and the reflective surface, and the antenna directivity is enhanced by means of the second metamaterial. The refractive index distribution on the metamaterial sheet layers of the second metamaterial is obtained through an initial phase method. The calculation process is easily programmed and coded. A user only needs to master the use method of the code, which facilitates large-scale popularization.

IPC Classes  ?

• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
• H01Q 15/02 - Refracting or diffracting devices, e.g. lens, prism
• H01Q 19/06 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
• H01Q 19/10 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces

Abstract

Disclosed is a microwave antenna, which comprises a housing having an opening on one side, and a feed source disposed on another side of the housing, and further comprises a first metamaterial closing the opening of the housing. The feed source is disposed coaxial with the first metamaterial. The first metamaterial is formed by a plurality of metamaterial sheet layers having the same thickness and same refractive index distribution. Each first metamaterial sheet layer comprises a base material and a plurality of first artificial microstructures periodically arranged on the base material. In the present invention, the refractive index distribution on the first metamaterial sheet layers is obtained through an initial phase method. The calculation process is easily programmed and coded. After a code is generated, a user only needs to master the use method of the code, which facilitates large-scale popularization. The microwave antenna becomes thinner and lighter after the metamaterial is added.

IPC Classes  ?

• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

Abstract

Disclosed are a hybrid transmission-reflection microwave antenna and a communication device. The hybrid transmission-reflection microwave antenna comprises a housing having an opening on one side, a feed source disposed on another side of the housing, and a metamaterial closing the opening of the housing. The feed source is disposed coaxial with the metamaterial. The metamaterial is formed by a plurality of metamaterial sheet layers having the same thickness and same refractive index distribution. Each metamaterial sheet layer comprises a base material and a plurality of artificial microstructures periodically arranged on the base material. The metamaterial is provided with a tapered reflective surface at a position right opposite the feed source. The housing is further provided with a reflecting element at a position opposite the metamaterial. The refractive index distribution on the metamaterial sheet layers is obtained through an initial phase method. In the present invention, the refractive index distribution on the metamaterial sheet layers is obtained through the initial phase method. The calculation process is easily programmed and coded. After a code is generated, a user only needs to master the use method of the code, which facilitates large-scale popularization. The hybrid transmission-reflection microwave antenna becomes thinner and lighter and has an enhanced directivity after the metamaterial is added.

IPC Classes  ?

• H01Q 19/18 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces

Abstract

The present invention provides an artificial microstructure employed in an artificial electromagnetic material. The artificial microstructure includes a first segment, a second segment, and a third segment. The first segment is parallel to the second segment, and the third segment is connected between the first segment and the second segment. The artificial electromagnetic material has a special electromagnetic effect. The artificial electromagnetic material can be applied to various electromagnetic application systems instead of the typical electromagnetic material.

IPC Classes  ?

• H04B 3/40 - Artificial linesNetworks simulating a line of certain length
• B81B 7/00 - Microstructural systems
• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

Abstract

The present invention relates to a metamaterial antenna. The metamaterial antenna comprises a housing, a feed source, a first metamaterial tightly clinging to an aperture edge of the feed source, a second metamaterial disposed at a preset interval from and opposite the first metamaterial, and a third metamaterial tightly clinging to an edge of the second metamaterial. An enclosed cavity is formed by the housing, the feed source, the first metamaterial, the second metamaterial and the third metamaterial. A central axis of the feed source passes through center points of the first metamaterial and the second metamaterial. A reflective layer for reflecting electromagnetic waves is disposed on surfaces outside the cavity of the first metamaterial and the second metamaterial. In the present invention, by using unique electromagnetic properties of metamaterials, the aperture efficiency of the antenna is increased through multiple reflections of electromagnetic waves, and a desirable response of a far-field radiation field is obtained. Meanwhile, the thickness of the antenna is greatly reduced through the design of multiple reflections, and the antenna system is more miniaturized.

IPC Classes  ?

• H01Q 19/06 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
• H01Q 19/10 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
• H01Q 15/02 - Refracting or diffracting devices, e.g. lens, prism
• H01Q 15/23 - Combinations of reflecting surfaces with refracting or diffracting devices

Abstract

Provided is a metamaterial, which comprises a functional layer formed by superposing a plurality of functional metamaterial sheet layers having the same thickness and refractive index distribution. Each functional metamaterial sheet layer comprises a base material and a plurality of artificial metal microstructures periodically arranged on the base material. The refractive index of the functional metamaterial sheet layer is concentrically distributed about the center point of the functional metamaterial sheet layer, the refractive index being the largest at the center of circle, and being the same at the same radius. Also provided are a metamaterial and a method for designing refractive index distribution thereof. The refractive index distribution on the functional metamaterial sheet layers is obtained through an initial phase method. Since the refractive index distribution on the metamaterial sheet layers is obtained through the initial phase method, the application range is wide, and the calculation process is easily programmed and coded. A user only needs to master the use method of the code, which facilitates large-scale popularization.

IPC Classes  ?

• G02B 5/00 - Optical elements other than lenses

Abstract

Disclosed is a WLAN bridge antenna, which comprises a housing having an opening on one side, a feed source disposed on another side of the housing, and a metamaterial closing the opening of the housing. The feed source is disposed coaxial with the metamaterial. The metamaterial is formed by a plurality of metamaterial sheet layers having the same thickness and same refractive index distribution. Each metamaterial sheet layer comprises a base material and a plurality of artificial microstructures periodically arranged on the base material. The metamaterial is provided with a tapered reflective surface at a position right opposite the feed source. The refractive index distribution on the metamaterial sheet layers is obtained through an initial phase method. In the present invention, the refractive index distribution on the metamaterial sheet layers is obtained through the initial phase method. The calculation process is easily programmed and coded. After a code is generated, a user only needs to master the use method of the code, which facilitates large-scale popularization. The WLAN bridge antenna becomes thinner and lighter and has an enhanced directivity, low loss and high gain after the metamaterial is added.

IPC Classes  ?

• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
• H01Q 15/02 - Refracting or diffracting devices, e.g. lens, prism
• H01Q 19/06 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
• H01Q 19/10 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces

Abstract

An artificial electromagnetic material is provided. The artificial electromagnetic material includes at least one material sheet. Each material sheet includes a laminary substrate and a plurality of artificial microstructures attached to the substrate. The substrate is made from transparent material. Because the substrate is made from transparent material, therefore the artificial electromagnetic material is capable of generating responses to visible light wave and convergence, divergence, deflection of visible light wave and so on can be achieved.

IPC Classes  ?

• G02B 1/00 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements
• C01B 31/02 - Preparation of carbon; Purification
• B82Y 20/00 - Nanooptics, e.g. quantum optics or photonic crystals
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
• H01Q 15/08 - Refracting or diffracting devices, e.g. lens, prism formed of solid dielectric material
• B82Y 40/00 - Manufacture or treatment of nanostructures
• G02B 5/00 - Optical elements other than lenses

Abstract

The present invention provides a resonant cavity which includes a cavity and a tuning device. The tuning device is set on the cavity and a part of the tuning device extends into the cavity. The depth to which the tuning device reaches in the cavity is adjustable. The part of the tuning device which is located in the cavity is provided with at least one piece of meta-material. By providing the tuning device in the cavity with the meta-material, it is possible to adjust the resonant frequency of the resonant cavity preferably by adjusting the length of the part of the tuning device inside the cavity. Moreover, the present invention also provides a filter with the resonant cavity.

IPC Classes  ?

• H01P 1/20 - Frequency-selective devices, e.g. filters

Abstract

The present invention provide a resonant cavity, including a case with an inner cavity, as well as an input end and an output end which are installed in the case and extend into the inner cavity respectively. The inner of the resonant cavity is also equipped with a metamaterial block including at least one metamaterial layer, and at least one of the input end and the output end is coupled with the metamaterial block by a matching layer. With the resonant cavity of the present invention, the resonance frequency can be reduced by setting the metamaterial block with high permittivity; the coupling performance can be improved by coupling the matching layer between the metamaterial block and the input end as well as the output end; thus the performance of a filter is improved by importing a signal from the input end to the inner of the cavity, and then to the output end with high efficiency. A filter with the resonant cavity is also provided by the present invention.

IPC Classes  ?

• H01P 7/06 - Cavity resonators

Abstract

The present invention relates to the field of microstrip. The microstrip comprises a metal strip, a dielectric substrate, and a ground plate. The dielectric substrate consists of a glass microsphere-filled FR-4. The metal strip is arranged on one side of the dielectric substrate; the ground plate is arranged on the other side of the dielectric substrate; both are affixed to the dielectric substrate. The present invention uses the glass microsphere-filled FR-4 as the dielectric substrate and allows for adjustments of the refractive index distribution within the dielectric substrate, thus effectively inhibiting space wave leakage of the microstrip, and solving the problem of electromagnetic wave crosstalk between adjacent microstrips.

IPC Classes  ?

• H01P 3/08 - MicrostripsStrip lines

Abstract

Disclosed is a speaker antenna, which comprises an antenna body and a metamaterial either affixed to an aperture plane of the antenna body or arranged directly in front of the aperture plane of the antenna body. The metamaterial comprises a substrate and multiple artificial metal microstructures periodically arranged on the substrate. Refractive indexes on the metamaterial are in a circular distribution. The refractive index at the center is at a minimum; the refractive indexes at a same radius are identical; and the refractive indexes increase as the radius increases. Or, the refractive indexes on the metamaterial are in a concentrically elliptic distribution with the center of the metamaterial as the center. By adding the metamaterial onto the aperture plane of the regular speaker antenna, the present invention uses a metamaterial principle to allow the speaker antenna to be provided with a certain radiation range and to be provided under the radiation range with a certain energy flux density distribution, and is provided with the beneficial effects of a simple structure and of capability in electromagnetic wave distribution manipulation.

IPC Classes  ?

• H01Q 13/02 - Waveguide horns

Abstract

Disclosed are a high-gain metamaterial antenna, a wireless access device, and a router. The high-gain metamaterial antenna of the present invention comprises a dielectric substrate, a metal structure, a feeder cable, and a ground reference. The metal structure, the feeder cable, and the ground reference are all arranged on the dielectric substrate, where the feeder cable and the metal structure are coupled to each other. The ground reference comprises a first ground reference unit and a second ground reference unit respectively arranged on two opposite surfaces of the dielectric substrate. The first ground reference unit allows one end of the feeder cable to form a microstrip cable. The high-gain metamaterial antenna, the wireless access device, and the router of the present invention acquire a required equivalent dielectric constant and magnetic permeability distribution by controlling precisely the topological morphology of the antenna metal structure and by distributing rationally the microstrip cable, thus allowing for the antenna the implementation of improved impedance matching within an operating frequency band, completion with increased efficiency of energy conversion, acquisition of an ideal radiation pattern, a high-gain, and implementation of the miniaturization of the antenna under the premise of meeting communication device performance requirement.

IPC Classes  ?

• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support

Abstract

Disclosed are a monopole antenna (10), a wireless access device, and a wireless router. The monopole antenna of the present invention comprises a dielectric substrate (7), a feedpoint (5) arranged on a surface of the dielectric substrate, a feeder cable (4) connected to the feedpoint, and a metal structure (6), where the feeder cable and the metal structure are coupled to each other. The monopole antenna, the wireless access device, and the wireless router of the present invention are capable of simultaneously receiving or transmitting electromagnetic waves of two or more different wave bands, thereby meeting the requirement of a mode having multiple operating frequency bands when in single-frequency and having different operating frequency bands in operation simultaneously when in multi-frequencies, thus implementing the miniaturization of the antenna under the premise of meeting communication device performance requirement.

IPC Classes  ?

• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
• H01Q 1/22 - SupportsMounting means by structural association with other equipment or articles
• H01Q 1/48 - Earthing meansEarth screensCounterpoises
• H01Q 5/10 - Resonant antennas
• H04W 88/14 - Backbone network devices

Abstract

Provided in the present invention is a metamaterial. The metamaterial comprises a substrate material and multiple metamaterial units randomly scattered within the substrate material. The metamaterial units each comprise a dielectric substrate and one or multiple artificial microstructures fixed on the dielectric substrate. Also provided in the present invention is a preparation method for the metamaterial. Because the artificial microstructures are randomly distributed within a three-dimensional space, thus the metamaterial is capable of generating specific electromagnetic responses for incident electromagnetic waves from random directions, and, compared with the prior metamaterial functional board, provides an extended range of applications

IPC Classes  ?

• B81B 1/00 - Devices without movable or flexible elements, e.g. microcapillary devices
• B81B 7/00 - Microstructural systems
• B81C 1/00 - Manufacture or treatment of devices or systems in or on a substrate
• G02F 1/361 - Organic materials
• G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics

Abstract

The present invention relates to a resonant cavity, including a cavity body and an input end and output end provided respectively on two sidewalls of the cavity body. The cavity body is further provided therein with at least one metamaterial sheet, each metamaterial sheet including a non-metal substrate and an artificial microstructure attached to the substrate, the artificial microstructure being of a structure with a geometric figure formed by the wires of a conductive material, the artificial microstructure attached at the edge on either side of each metamaterial sheet being electrically connected to the input end and output end respectively via a metal. The present invention can be applied to realize the functions of a band stop filter using a single resonant cavity. In addition, also provided is a filter having said resonant cavity.

IPC Classes  ?

• H01P 7/06 - Cavity resonators
• H01P 1/207 - Hollow waveguide filters

Abstract

Provided is a resonant cavity, including a cavity body, at least two metamaterial plates located inside the cavity body, each metamaterial plate including at least one metamaterial sheet, the cavity body being further installed thereon with an adjustment device for adjusting the relative position between the at least two metamaterial plates. The present invention realizes the purpose of frequency reduction by way of placing a metamaterial plate in a resonant cavity and using the high refractive index property of metamaterial, and further realizes trimming of the resonant frequency under the condition of reduced frequency by providing an adjustment device for the metamaterial plate to make the relative position between each metamaterial plate adjustable, which can meet more accurate filtering demands. In addition, also provided is a filter having said resonant cavity.

IPC Classes  ?

• H01P 7/06 - Cavity resonators

Abstract

The present invention relates to a base station antenna comprising an antenna module having multiple resonators arranged in an array and a metamaterial module arranged in correspondence to the resonators. The metamaterial module comprises at least one metamaterial lamella. Areas on each metamaterial lamella directly opposite to each resonator form refractive index distribution areas. Each refractive index distribution area forms therein multiple refractive index straight lines parallel to each other. With one refractive index straight line within each refractive index distribution area as a dividing line, respectively formed on two sides of the dividing line is one square area. Points on a same refractive index straight line within each square area have identical refractive indexes. Each refractive index straight line decreases gradually along the direction away from the dividing line, while the rate of decrease increases gradually. This changes a transmission path of an electromagnetic wave emitted by the resonators, thus improving the directionality and gain thereof.

IPC Classes  ?

• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

Abstract

The present invention relates to a base station antenna comprising an antenna module having multiple resonators and a metamaterial module arranged in correspondence to the resonators. The metamaterial module comprises multiple metamaterial lamellae. Multiple refractive index circles are formed with any point on each metamaterial lamella as a center, while several concentric refractive index circles form one annular refractive index distribution area. A polar coordinate system is established with the center of the refractive index circles as the pole, O, and with any ray, Oy, having the initial point thereof at the pole, O, as the polar axis. Then, any refractive index circle having a radius of y on the metamaterial lamella is provided with a refractive index, n(y), of: [Formula I], where l is the distance from the resonators to the metamaterial lamella, λ is the wavelength of an electromagnetic wave, and d is the thickness of the metamaterial lamella, [Formula II], where nmax and nmin respectively represent the maximum refractive index and minimum refractive index on the metamaterial lamella, and [Formula III], where k represent the serial number of the annular refractive index distribution area where any point on the refractive index circles is on, and floor is a round down function. This improves the directionality of the base station.

IPC Classes  ?

• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

Abstract

The present invention relates to a base station antenna comprising an antenna module having multiple resonators and a metamaterial module arranged in correspondence to the resonators. The metamaterial module comprises at least one metamaterial lamella. Each metamaterial lamella forms thereon multiple refractive index straight lines parallel to each other. With one of the refractive index straight lines as a dividing line, each metamaterial lamella forms respectively on two sides of the dividing line one refractive index distribution area. Points on a same refractive index straight line within each refractive rate distribution area have identical refractive indexes. The refractive index of each refractive index straight line decreases along the direction away from the dividing line, while the rate of decrease increases gradually. This changes a transmission path of an electromagnetic wave emitted by the resonators, thus improving the directionality and gain thereof.

IPC Classes  ?

• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

Abstract

The present invention relates to a base station antenna comprising an antenna module having multiple resonators and a metamaterial module arranged in correspondence to the resonators. The metamaterial module comprises at least one metamaterial lamella. A Cartesian coordinate system, O-xy, is established with a point on each metamaterial lamella as the initial point, O, with a straight line perpendicular to the metamaterial lamella as the x axis, and with a straight ling passing through the initial point, O, and parallel to the metamaterial lamella as the y axis. Then, any one point on the y axis, (0, y) is provided with a refractive index, n(y), of formula (I), where l is the distance from the resonators to the metamaterial lamella, and d is the thickness of the metamaterial lamella, formula (II), where nmax and nmin respectively represent the maximum refractive index and minimum refractive index of the metamaterial lamella on the y axis, and R represents for the metamaterial lamella the maximum value that y can take on the y axis. Also, multiple concentric refractive index circles with different ys as radaii are formed on the metamaterial lamella. This improves the directionality and gain of the base station antenna.

IPC Classes  ?

• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
• H01Q 15/02 - Refracting or diffracting devices, e.g. lens, prism
• H01Q 19/06 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
• H01Q 21/00 - Antenna arrays or systems

Abstract

The present invention relates to the field of microstrip. Provided is a microstrip. The microstrip comprises a metal strip, a dielectric substrate, and a ground plate. The microstrip also comprises a metamaterial thin film. The metamaterial thin film and the metal strip are arranged on one side of the dielectric substrate and are both affixed to the dielectric substrate. The metamaterial thin film covers the metal strip. The ground plate is arranged on the other side of the dielectric substrate. The microstrip of the present invention allows for effective inhibition of space wave leakage, thus solving the problem of electromagnetic wave crosstalk between microstrips.

IPC Classes  ?

• H01P 3/08 - MicrostripsStrip lines

Abstract

An antenna and a mobile multimedia broadcasting device thereof. The antenna (12) comprises: a substrate (57), a first metal plate (56) and a second metal plate (58) both arranged on a first surface of the substrate (57), a first feeder cable (54), and a second feeder cable (55). The substrate (57) is a rectangle provided with a first center line (b) and a second center line (a) perpendicular to the first center line. The first metal plate (56) and the second metal plate (58) are mutually symmetrical correspondingly to a first groove topological structure (561) and a second groove topological structure (581) over the first center line (b). The first feeder cable (54) and the second feeder cable (55) respectively revolve around the first metal plate (56) and the second metal plate (58). A first feeder piece (53) having a notch (531) facing the second metal plate (58) is arranged on one end of the first feeder cable (54) that is in proximity to the first center line (b). A second feeder piece (59) corresponding to the notch (531) of the first feeder piece is arranged on one end of the second feeder cable (55) that is in proximity to the first center line (b). The antenna is an antenna designed by applying a metamaterial technology and allows for electromagnetic wave resonance, meets the requirements of miniaturized wireless communication equipment and of internally-arranged antenna.

IPC Classes  ?

• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
• H01Q 1/22 - SupportsMounting means by structural association with other equipment or articles
• H05K 11/02 - Combinations of a radio or television receiver with apparatus having a different main function with vehicles
• H04N 21/414 - Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
• H04H 20/62 - Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast for transportation systems, e.g. in vehicles
• B60R 11/02 - Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the likeArrangement of controls thereof
• H04N 5/64 - Constructional details of receivers, e.g. cabinets or dust covers

Abstract

The present invention relates to a base station antenna comprising an antenna module having multiple resonators arranged in an array and a metamaterial module arranged in correspondence to the resonators. The metamaterial module comprises at lease one metamaterial lamella. Areas on each metamaterial lamella directly opposite to each resonator form refractive index distribution areas. Each refractive index distribution area forms therein multiple refractive index straight lines parallel to each other. With one refractive index straight line within each refractive index distribution area as a dividing line, several adjacent refractive index straight lines on each side of the dividing line are grouped as a set to form multiple square areas. Points on a same refractive index straight line within each square area have identical refractive indexes. The refractive index of each refractive index straight line decreases along the direction away from the dividing line, while the rate of decrease increases gradually. Within each square area, the refractive index straight lines closest to and farthest from the dividing line respectively are provided with identical refractive indexes, thus improving the directionality and gain of the antenna.

IPC Classes  ?

• H01Q 3/14 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying the relative position of primary active element and a refracting or diffracting device

Abstract

The present invention relates to a base station antenna comprising an antenna module having multiple resonators arranged in an array and a metamaterial module arranged in correspondence to the resonators. The metamaterial module comprises at least one metamaterial lamella. Areas on each metamaterial lamella directly opposite to each resonator form refractive index distribution areas. Each refractive index distribution area forms therein multiple refractive index straight lines parallel to each other. With one refractive index straight line within each refractive index distribution area as a dividing line, respectively formed on two sides of the dividing line is one square area. Points on a same refractive index straight line within each square area have identical refractive indexes. Each refractive index straight line decreases gradually along the direction away from the dividing line, while the rate of decrease increases gradually. This changes a transmission path of an electromagnetic wave emitted by the resonators, thus improving the directionality and gain thereof.

IPC Classes  ?

• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

Abstract

The present invention relates to the field of microstrip. Provided is a metamaterial-based microstrip. The microstrip comprises a metal strip, a dielectric substrate, and a ground plate. The dielectric substrate is a metamaterial substrate. The metamaterial substrate comprises multiple first metamaterial lamellae. The metal strip and the ground plate respectively are arranged on two sides of the metamaterial substrate or on a same side of the metamaterial substrate. By implementing the arrangement of refractive indexes via the metamaterial substrate, the present invention allows for effective inhibition of space wave leakage, thus solving the problem of electromagnetic wave crosstalk between adjacent microstrips, while at the same time, the metamaterial substrate is provided with a simplified manufacturing process, where a complex splicing technique is obviated, thereby allowing for reduced costs.

IPC Classes  ?

• H01P 3/08 - MicrostripsStrip lines

Abstract

The present invention relates to a microstrip. The microstrip comprises a metal strip, a dielectric substrate, and a ground plate, and is characterized in that: the dielectric substrate is formed by splicing a first substrate and a second substrate, the first substrate and the second substrate have different refractive index distributions, the first substrate has spliced on both sides thereof second substrates, the metal strip has arranged directly thereunder the first substrate, and the ground plate is arranged directly under the dielectric substrate. By employing under the metal strip the two types of dielectric substrates having different refractive index distributions, the microstrip of the present invention effectively inhibits space wave leakage, thus solving the problem of electromagnetic wave crosstalk between microstrips.

IPC Classes  ?

• H01P 3/08 - MicrostripsStrip lines

Abstract

This invention provides a diverging electromagnetic wave meta-material, which includes at least one meta-material sheet layer, the meta-material sheet layer has a center circular distribution of refractive index by its center, and has the same refractive index at the same radius, the refractive index is gradually increased as the radius increases. The present invention utilizes punching mode or attaching artificial microstructure to change the electromagnetic parameters of each points in meta-material that electromagnetic waves passing through the meta-material is diverged, has the advantages of simple process, low cost and being easy to realize, what's more, the meta-material of the present invention has small size, does not occupy too much space, the device made of which is easy to achieve miniaturization.

IPC Classes  ?

• H01Q 13/08 - Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
• H01Q 21/00 - Antenna arrays or systems

Abstract

An artificial microstructure made of conductive wires includes a split resonant ring with a split, and two curves. The two curves respectively start from first end and the second end of the split resonant ring and curvedly extend inside the split resonant ring, where the two curves do not intersect with each other, and do not intersect with the split resonant ring.

IPC Classes  ?

• H01P 1/203 - Strip line filters
• H01P 7/08 - Strip line resonators
• G02B 1/00 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements
• H05K 1/02 - Printed circuits Details
• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
• H05K 1/16 - Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor

Abstract

The present invention relates to a resonant cavity, including a cavity, and two incentive ports respectively provided on two side walls of the cavity and both protruding into the cavity. The two incentive ports are provided opposite each other, and at least one metamaterial sheet is located in the cavity, with each metamaterial sheet including a nonmetal material substrate and an artificial microstructure attached to the substrate. The artificial microstructure is a structure formed by a conductive material thread circled a plurality of times. The structure significantly increases the inductance of the metamaterial medium, thus changing the resonance frequency. The use of the present invention can greatly lower the resonance frequency of a resonant cavity, and to realize the same resonance frequency, apparently the volume of the resonant cavity will be greatly reduced. Additionally, a filter having the resonant cavity is also provided.

IPC Classes  ?

• H01P 7/06 - Cavity resonators

Abstract

A resonant cavity, including a cavity, and two incentive ports respectively provided on two side walls of the cavity and both protruding into the cavity. The two incentive ports are provided opposite each other. At least one metamaterial sheet is located in the cavity, with each metamaterial sheet including a nonmetal material substrate and a plurality of artificial microstructures attached to the substrate. The artificial microstructure includes at least two threads made from conductive materials. The use of the resonant cavity can greatly lower the resonance frequency thereof, and to realize the same resonance frequency, apparently the volume of the resonant cavity will be greatly reduced. Additionally, a filter having the resonant cavity is also provided.

IPC Classes  ?

• H01P 7/06 - Cavity resonators

Abstract

A resonant cavity, including a cavity, a metal plate provided inside the cavity which separates the cavity into two closed chambers, and an input end and an output end respectively provided on two side walls of the cavity so as to respectively protrude into the two chambers. The input end and the output end are provided opposite each other, and a metamaterial sheet is located in each of the two chambers, with the metamaterial sheet including a nonmetal material substrate and at least one artificial microstructure attached to the substrate. Each artificial microstructure is a planar or spatial structure of geometric shapes which are formed by threads made from conductive materials. The use of the resonant cavity structure makes possible the use of a single resonant cavity to realize the functions of a small band-pass filter.

IPC Classes  ?

• H01P 7/06 - Cavity resonators

Abstract

Disclosed are a dual-frequency antenna, a MIMO antenna device and a 2.4GHz/5.8GHz dual-frequency wireless communication device. The dual-frequency antenna includes a feeder point, a feeder connected to the feeder point and a metal structure, wherein the feeder and the metal structure are coupled to each other, and the dual-frequency antenna makes electromagnetic waves in at least two different bands resonate. The present invention employs manual electromagnetic material technology to design a relevant electromagnetic wave resonance response metal structure library, wherein the size of these structures is much smaller compared with traditional antenna structures, enabling the physical size of the antenna to be free from the restriction of the physical length of a half wavelength and enabling the structures to be embedded in various wireless electronic devices conveniently; a metal structure with matched resistance is selected according to the application product and then sorted, tested and adjusted continuously to finally optimize a metal structure suitable for a dual-frequency antenna, enabling the selected metal structure to make electromagnetic waves in at least two different bands resonate, meeting the operating requirements of wireless electronic devices such as miniaturization, an embedded antenna and multi-mode.

IPC Classes  ?

• H01Q 5/00 - Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements

Abstract

The present invention relates to an artificial composite material and an antenna made of the artificial composite material. The artificial composite material is divided into multiple regions. An electromagnetic wave arrives at a first surface of the artificial composite material, and is emitted from a second surface opposite to the first surface. The intersection of an ith region and the first surface is a bottom surface of the ith region. The intersection of the ith region and the second surface is a top surface of the ith region. It is assumed that the included angle between the line connecting a radiation source and a point on the bottom surface of the ith region and a straight line perpendicular to the artificial composite material is θ. The included angle θ exclusively corresponds to a curved surface in the ith region. The collection of points, on the bottom surface of the ith region and having the same included angle θ, forms the boundary of the curved surface to which the included angle θ exclusively corresponds. The index of refraction is constant everywhere on the curved surface to which the included angle θ exclusively corresponds. The index of refraction of each region decreases as the included angle θ increases. In the present invention, the transition of the index of refraction of the artificial composite material is designed to be in the shape of a curved surface, thereby reducing the effects of refraction, diffraction and reflection at transitions.

IPC Classes  ?

• H01Q 15/02 - Refracting or diffracting devices, e.g. lens, prism
• H01Q 15/08 - Refracting or diffracting devices, e.g. lens, prism formed of solid dielectric material
• H01Q 19/06 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens

Abstract

An artificial composite material. The artificial composite material is divided into multiple regions. A plane electromagnetic wave arrives at a first surface of the artificial composite material, and is emitted in the form of a spherical wave from a second surface opposite to the first surface. The directions opposite the emitted electromagnetic wave intersect at the virtual focus of the artificial composite material. The intersection of an ith region and the first surface is a bottom surface of the ith region. The intersection of the ith region and the second surface is a top surface of the ith region. It is assumed that the included angle between the line connecting the virtual focus and a point on the top surface of the ith region and a straight line perpendicular to the artificial composite material is θ. The included angle θ exclusively corresponds to a curved surface in the ith region. The collection of points, on the top surface of the ith region and having the same included angle θ, forms the boundary of the curved surface to which the included angle θ exclusively corresponds. The index of refraction is constant everywhere on the curved surface to which the included angle θ exclusively corresponds. The index of refraction of each region decreases as the included angle θ increases. A lens antenna made of the composite material can reduce the effects of refraction, diffraction and reflection at transitions, and alleviate the problem of performance degradation incurred by mutual interference.

IPC Classes  ?

• H01Q 19/06 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens

Abstract

Provided is a resonant cavity, having the interior being a cavity. At least one metamaterial lamella is placed in the cavity. Each metamaterial lamella comprises a substrate made of a non-metallic material and a man-made microstructure adhering to a surface of the substrate. The man-made microstructure is a structure that is formed of a thread made of an electrically conductive material and has a geometric pattern. When the resonant cavity, and after the metamaterial lamella is added therein, the resonant frequency of the resonant cavity can be decreased obviously, thereby miniaturizing the resonant cavity. Also provided is a filter having the resonant cavity.

IPC Classes  ?

• H01P 1/207 - Hollow waveguide filters

Abstract

Provided is a resonant cavity, comprising a cavity. At least one man-made microstructure is disposed in the cavity. The man-made microstructure is a two-dimensional or three-dimensional structure that is formed of a metal thread and has a certain geometric shape. According to the technical solution of the present invention, by disposing the man-made microstructure in the resonant cavity, the frequency of the resonant cavity can be decreased, the quality factor Q of the resonant cavity can be increased, and improvement of the performance of the resonant cavity and miniaturization of the resonant cavity can be facilitated. Also provided is a filter having the resonant cavity.

IPC Classes  ?

• H01P 7/06 - Cavity resonators

Abstract

A resonant cavity and a filter having the resonant cavity, comprising a cavity (1) and a harmonic oscillator disposed in the cavity. The harmonic oscillator comprises at least one rectangular cuboid metamaterial (2, 3, 4). Each piece of metamaterial comprises at least one material lamella. Each material lamella comprises a substrate and a man-made microstructure adhering to the substrate. Each piece of metamaterial is stacked along the height direction of the metamaterial, and the height directions of any two adjacent pieces of metamaterial are perpendicular to each other. By changing the positions of the adjacent materials in the resonant cavity, the resonant frequency of the resonant cavity can be decreased, and the performance of the resonant cavity can be improved, thereby facilitating miniaturization of the resonant cavity.

IPC Classes  ?

• H01P 1/218 - Frequency-selective devices, e.g. filters using ferromagnetic material the ferromagnetic material acting as a frequency selective coupling element, e.g. YIG-filters
• H01P 1/215 - Frequency-selective devices, e.g. filters using ferromagnetic material
• H01P 1/212 - Frequency-selective devices, e.g. filters suppressing or attenuating harmonic frequencies
• H01P 1/20 - Frequency-selective devices, e.g. filters
• H03H 9/00 - Networks comprising electromechanical or electro-acoustic elementsElectromechanical resonators
• H03H 9/46 - Filters

Abstract

Provided in examples of the present invention is a method for making a meta-material, comprising： casting a polymer material in liquid state into a pre-set mould, to shape a sheet-like film; imprinting the film using a pre-set imprinting template before curing the film, to form an upper surface and a lower surface of the film into an array of semicircular grooves respectively; filling the grooves in the upper surface of the film with microspheres having the desired electromagnetic properties, the diameter of the microspheres being identical to that of the grooves into which they are filled; and laminating the films filled with the microspheres into one piece, such that the microspheres filled in the grooves in the upper surface of one film are imbedded into the grooves in the lower surface of another film. Also provided in another example of the present invention is a meta-material. By means of the examples of the present invention, a fully dielectric meta-material having the desired electromagnetic properties can be obtained through a simple and accurate method of preparation.

IPC Classes  ?

• H01P 1/217 - Frequency-selective devices, e.g. filters using ferromagnetic material the ferromagnetic material acting as a tuning element in resonators

Abstract

The present invention provides a method for preparing an inhomogeneous dielectric substrate. The method comprises: injecting a first macromolecular material into a first mould chamber, to obtain a first base body, the first base body being formed of a first macromolecular material layer and protruding teeth and a groove that are located below the first macromolecular material layer; injecting a second macromolecular material layer into a second mould chamber, to obtain a second base body, the second base body being formed of a second macromolecular material layer and protruding teeth and a groove that are located below the second macromolecular material layer; joining the first base body and the second base body, so that the protruding teeth and the groove of the first base body are engaged with the protruding teeth and the groove of the second base body, to obtain a third base body; and removing the first macromolecular material layer and the second macromolecular material layer from the third base body, to obtain an inhomogeneous dielectric substrate. A process of the inhomogeneous dielectric substrate is simple and highly precise.

IPC Classes  ?

• B29C 45/16 - Making multilayered or multicoloured articles
• B29C 45/32 - Moulds having several axially spaced mould cavities

Abstract

The present invention relates to a base station antenna, comprising an antenna module having multiple oscillators arranged in an array and a meta-material module. The meta-material module comprises at least one meta-material sheet layer. Each meta-material sheet layer directly faces a region of each oscillator, forming a refraction index distribution region. In each refraction index distribution region, multiple concentric annulus regions are formed with a position directly facing the center of a corresponding oscillator as a circle center. In each annulus region, multiple refraction index circles are formed with a position directly facing the center of the corresponding oscillator as a circle center. Refraction indexes of points on the same refraction index circle are the same. The refraction indexes of the refraction index circles are reduced along a direction away from the circle center and the reduction amount increases. The refraction index of a refraction index circle with a minimum diameter in each annulus region is greater than or equal to the refraction index of a refraction index circle with a maximum diameter in the adjacent annulus region with a smaller diameter. Therefore, the directionality and gain of the base station antenna are improved.

IPC Classes  ?

• H01Q 1/48 - Earthing meansEarth screensCounterpoises

Abstract

Provided is a man-made microstructure, comprising at least three split-ring structures encircled and nested in sequence. Each of the split-ring structures is formed of a thread having two ends close to each other, forming an opening, and being made of an electrically conductive material. Also provided is an artificial electromagnetic material comprising the man-made microstructure. The artificial electromagnetic material having the man-made microstructure can realize a broadband wave absorbing function.

IPC Classes  ?

• H01P 1/00 - Auxiliary devices
• G02F 1/355 - Non-linear optics characterised by the materials used

Abstract

Provided is a resonant cavity. An input terminal and an output terminal are disposed on inner walls on two sides of the cavity respectively. Two metamaterial blocks separated from each other are disposed in the resonant cavity. The two metamaterial blocks contact the input terminal and the output terminal respectively. Each metamaterial block comprises a substrate made of a non-metallic material and a man-made microstructure adhering to the substrate. The man-made microstructure is a structure that is formed of a thread made of an electrically conductive material and has a geometric pattern. By adding the metamaterial blocks into the resonant cavity, the resonant frequency can be effectively decreased without increasing the volume, thereby facilitating miniaturization of a filter. Also provided is a filter having the resonant cavity.

IPC Classes  ?

• H01P 7/06 - Cavity resonators
• H01P 1/207 - Hollow waveguide filters

Abstract

The present invention provides a resonant cavity, comprising a cavity and harmonic oscillator disposed in the cavity. The harmonic oscillator is made of a metamaterial. The metamaterial comprises at least one material lamella. Each material lamella comprises a substrate and at least one man-made microstructure adhering to the substrate. The man-made microstructure comprises four branches. With a point being the center of rotation, each of the branches rotates by 90 degrees, 180 degrees, and 270 degrees to overlap the other three branches respectively. According to the technical solution of the present invention, by disposing the metamaterial in the resonant cavity, the frequency of the resonant cavity can be decreased, and miniaturization of the resonant cavity can be facilitated. Also provided is a filter having the resonant cavity.

IPC Classes  ?

• H01P 7/06 - Cavity resonators
• H01P 1/207 - Hollow waveguide filters