Abstract

The present application relates to a bidirectional uniform radiation antenna feed system, comprising a power division feed network (201) and multiple waveguide slot antenna arrays (118). The multiple waveguide slot antenna arrays (118) are equally divided into two superimposed groups; each of the waveguide slot antenna arrays (118) comprises eight waveguide slot antennas (402); the waveguide slot antennas (402) are placed on a first power divider (505) of the power division feed network (201); the waveguide slot antennas (402) on the two superimposed waveguide slot antenna arrays (118) are arranged in a staggered manner. Bidirectional radiation is adopted in the present invention, i.e., the top and the bottom are each provided with 32 waveguide slot antennas which irradiate to the middle, and radiation electromagnetic fields are evenly distributed, such that radiation blind areas are effectively reduced; moreover, the waveguide slot antennas adopt a standing wave array antenna form, the length of the radiation electromagnetic fields is evenly distributed along the antenna direction, and two adjacent waveguide slot antennas are fed by different frequency sources, with slots thereof staggered to each other, such that the electromagnetic field superposition is effectively reduced.

IPC Classes  ?

• H01Q 5/55 - Feeding or matching arrangements for broad-band or multi-band operation for horn or waveguide antennas
• H01Q 13/10 - Resonant slot antennas

Abstract

A processing method for a processing system for quarantine through microwave dielectric heating, comprising a closed-loop control process on the basis of temperature detection, a defence method for the security of living beings, an interlocked control method for guaranteeing the security of a device and people, an overall process monitoring method, and a process procedure for automated processing of log quarantine through microwave dielectric heating. The processing method for a processing system for quarantine through microwave dielectric heating achieves the purpose of efficient, safe and reliable, and automated processing.

IPC Classes  ?

• A01M 1/22 - Stationary means for catching or killing insects by electric means

Abstract

The present application relates to a large shielding cabin having high shielding property, the shielding cabin is of a rectangular hexahedral structure and is provided with log access hatches on both sides, wherein a pallet conveyor and supporting beams are arranged inside the cabin. A waveguide antenna feed system is arranged up and down within the cabin, and the antenna feed system is connected to a microwave generator outside the cabin through a special waveguide opening. The cabin is further equipped with lighting, monitoring probes, mode stirrers, temperature sensors and other equipment, which are respectively provided with via in the cabin wall. A shielding cabin floor is equipped with a drain microwave cut-off channel that does not retain residual water and an extraction fan and dehumidification system is provided inside the cabin. The shielding cabin adopts all-welded shielding manner and the respective openings in the wall of the shielding cabin are provided with good shielding means and meet the limit value specified by the national standard. The external surfaces of the cabin are processed by adiabatic, thermal retardation, antiseptic, anti-salt spray and decoration treatment. The present shielding cabin reduces the loss of microwave energy of the cabin, avoids sparking, and further provides fixed bearing conditions for waveguides and other equipment.

IPC Classes  ?

• H05K 9/00 - Screening of apparatus or components against electric or magnetic fields

Abstract

Disclosed is a quarantine treatment system using microwave dielectric heating. The system comprises a shielding compartment (1), a microwave generator (5), an antenna feeder subsystem (7), a glass-fibre-reinforced-plastic pallet (12), a compartment-entering chain plate (13), a compartment-exiting chain plate (10), a pallet conveying belt (11), mode stirrers (6), a temperature sensor (9), a video monitor apparatus (8), microwave leakage monitoring apparatus (3), a spraying apparatus (2) and a system control apparatus (4). The system realizes the replacement of the existing drug-fumigation quarantine treatment method, and performs an inactivation treatment on mediums by means of a high-power microwave dielectric heating method, thereby avoiding the defects of pollution, drug residues and low efficiency brought about by the existing treatment method. The intelligence and convenience of a quarantine treatment process are realized by means of automatic detection, closed-loop control and safety monitoring, which have the advantages of being environmentally friendly, highly efficient and safe.

IPC Classes  ?

• A01M 1/22 - Stationary means for catching or killing insects by electric means

Abstract

The application discloses an antenna feed system providing high-power microwave bidirectional uniform radiation. The system adopts bidirectional radiation including upper and lower radiation. In order to prevent a cross-coupling effect between antennas, upper and lower antennas adopt orthogonal polarization to provide antenna isolation. Further, in order to adjust standing waves on the antennas, three tuning stubs are included in a feed network to provide antenna matching. The embodiment can effectively resolve issues of a large standing wave and strong cross-coupling of antenna radiation in a metal shielding chamber.

IPC Classes  ?

• H04Q 1/50 - Conversion between different kinds of signals
• H01Q 13/20 - Non-resonant leaky-waveguide or transmission-line antennas Equivalent structures causing radiation along the transmission path of a guided wave