Abstract

A dielectric rod antenna assembly including a single waveguide arranged to direct electromagnetic energy into a plurality of dielectric rod antennas, and a plurality of dielectric rod antennas connected to the single waveguide.

IPC Classes  ?

• H01Q 13/24 - Non-resonant leaky-waveguide or transmission-line antennas Equivalent structures causing radiation along the transmission path of a guided wave constituted by a dielectric or ferromagnetic rod or pipe
• H01Q 1/36 - Structural form of radiating elements, e.g. cone, spiral, umbrella
• H01Q 21/00 - Antenna arrays or systems

Abstract

A dielectric rod antenna assembly including a single waveguide arranged to direct electromagnetic energy into a plurality of dielectric rod antennas, and a plurality of dielectric rod antennas connected to the single waveguide.

IPC Classes  ?

• H01Q 1/36 - Structural form of radiating elements, e.g. cone, spiral, umbrella
• H01Q 13/24 - Non-resonant leaky-waveguide or transmission-line antennas Equivalent structures causing radiation along the transmission path of a guided wave constituted by a dielectric or ferromagnetic rod or pipe
• H01Q 13/28 - Non-resonant leaky-waveguide or transmission-line antennas Equivalent structures causing radiation along the transmission path of a guided wave comprising elements constituting electric discontinuities and spaced in direction of wave propagation, e.g. dielectric elements or conductive elements forming artificial dielectric
• H01Q 21/00 - Antenna arrays or systems

Abstract

A compact, flat beam steerable antenna is described. The antenna includes a waveguide for conveying electromagnetic energy and an adjustable moiré pattern assembly disposed adjacent to the waveguide. The moiré pattern assembly is arranged to present varying moiré patterns comprised of regions of contrasting conductivity. In use, a direction for transmission of the electromagnetic radiation through the moiré pattern assembly can be varied by operation of the assembly to alter the moiré pattern.

IPC Classes  ?

• H01Q 3/12 - 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
• H01Q 3/20 - 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 relative position of primary active element and a reflecting device wherein the primary active element is fixed and the reflecting device is movable

Goods & Services

Microwave communications apparatus; microwave communications instruments; apparatus for receiving satellite broadcast signals; microwave antenna for the reception of satellite data; portable apparatus for receiving satellite transmissions; satellite apparatus; satellite communication apparatus; satellite communications equipment; satellite communications instruments; satellite dishes; satellite earth stations; satellite receivers; transmitting apparatus for satellite broadcast; masers (microwave amplifiers); electronic filters; filters being electrical components; filters for electromagnetic radiation; fixed electronic signal filters; radio-frequency filters; wave filters adapted for use with microwaves; frequency synthesizers; frequency converters; parabolic antenna; electrical tracking apparatus; radar apparatus; mobile communication terminals; low noise converters; apparatus for electronic digital processing; apparatus for electronic information processing; apparatus for transmitting electronic signals; cases adapted for electronic circuits; cases adapted for electronic equipment; casings for electronic devices; circuits (electric or electronic); electronic amplifiers; electronic apparatus for providing communication links; electronic apparatus for telemetry; electronic apparatus for testing communication links; electronic apparatus for the transmission of data; electronic communication apparatus; electronic communication installations; electronic decoders; electronic mixers for mixing signals; electronic radio apparatus; electronic signal generating apparatus; electronic signal processing apparatus; electronic signal transmission apparatus.

Abstract

A dielectric rod antenna assembly includes a metallic waveguide section and an air surrounded dielectric rod radiator section with corrugations formed between the metallic waveguide section and the air-surrounded dielectric rod radiator section. The corrugations are preferably formed in an transition portion between the dielectric, rod and the metallic waveguide section. The corrugations may be formed either in the dielectric rod or in the metallic waveguide. The presence of the corrugations has been found to reduce sidelobes of E-H (electro-magnetic) radiation transmitted by the assembly in use. The antenna assembly reduces the sidelobe levels and improves bandwidth and E-H plane symmetry of dielectric rod antennas thereby reducing wastage of microwave energy to sidelobes, susceptibility to interference and improving the polarisation purity of the transmitted and received signals.

IPC Classes  ?

• H01Q 13/24 - Non-resonant leaky-waveguide or transmission-line antennas Equivalent structures causing radiation along the transmission path of a guided wave constituted by a dielectric or ferromagnetic rod or pipe
• H01Q 13/02 - Waveguide horns
• H01Q 5/00 - Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
• H01P 1/211 - Waffle-iron filtersCorrugated structures

Abstract

A terrestrial data communications wireless link includes a first link end that has a first directional antenna, a first beacon and a first redirecting assembly coupled to the first directional antenna. The wireless link also includes a second link end having a second directional antenna, a second beacon and a second redirecting assembly coupled to the second directional antenna. In use the first directional antenna and the second directional antenna are maintained in mutual alignment by the first redirecting assembly redirecting the first directional antenna in response to a signal from the second beacon and the second redirecting assembly redirecting the second directional antenna in response to a signal from the first beacon.

IPC Classes  ?

• H01Q 1/12 - SupportsMounting means
• H01Q 3/08 - 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 movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
• H01Q 13/02 - Waveguide horns
• H01Q 19/19 - 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 comprising one main concave reflecting surface associated with an auxiliary reflecting surface
• H01Q 5/55 - Feeding or matching arrangements for broad-band or multi-band operation for horn or waveguide antennas
• H01Q 3/02 - 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 movement of antenna or antenna system as a whole
• G01S 3/38 - Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal

Abstract

A terrestrial data communications wireless link includes a first link end that has a first directional antenna, a first beacon and a first redirecting assembly coupled to the first directional antenna. The wireless link also includes a second link end having a second directional antenna, a second beacon and a second redirecting assembly coupled to the second directional antenna. In use the first directional antenna and the second directional antenna are maintained in mutual alignment by the first redirecting assembly redirecting the first directional antenna in response to a signal from the second beacon and the second redirecting assembly redirecting the second directional antenna in response to a signal from the first beacon.

IPC Classes  ?

• H01Q 3/12 - 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
• G01S 13/00 - Systems using the reflection or reradiation of radio waves, e.g. radar systemsAnalogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
• H01Q 1/20 - Resilient mountings
• H01Q 1/12 - SupportsMounting means
• H01Q 1/42 - Housings not intimately mechanically associated with radiating elements, e.g. radome
• H01Q 15/14 - Reflecting surfacesEquivalent structures
• H01Q 19/00 - 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
• H01Q 25/00 - Antennas or antenna systems providing at least two radiating patterns
• H04B 1/38 - Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving