Satellite-borne S-band duplexer

Abstract

The invention provides a satellite-borne S-band duplexer which adopts an all-dielectric waveguide filter structure to realize high-power low-voltage discharge resistance. The satellite-borne S-band duplexer comprises tuning screws, a flexible cable, tuning structural members, an SMA connector, a metal shell, special screws and an all-dielectric waveguide filter structure, wherein the all-dielectric waveguide filter structure adopts a channel filter which is composed of two H-plane waveguide stepped coupling and filtering channels, and each H-plane waveguide stepped coupling and filtering channel adopts a ceramic dielectric waveguide filter. Therefore, the satellite-borne S-band duplexer provided by the invention is small in size, simple in structure and high in low pressure power capacity, and does not have a low pressure discharge phenomenon. Meanwhile, the power endurance capacity of products is improved, the mechanics environment resisting performance of a ceramic dielectric is increased, an integrated structure design is realized, the mechanics environment resisting performance is enhanced, and the reliability of the duplexer is improved.

Description

technical field [0001] The invention belongs to the field of navigation, and in particular relates to a space-borne S-band duplexer which adopts an all-dielectric waveguide filter structure to realize high-power low-pressure discharge resistance. Background technique [0002] The duplexer is an important part of the satellite measurement and control subsystem. It transmits the downlink measurement and control signal sent by the measurement and control fixed radio to the combiner / splitter (measurement and control antenna), and at the same time transmits the uplink measurement and control signal sent by the combiner / splitter (measurement and control antenna) Transmission to non-coherent spread spectrum transponders (emergency transponders). The duplexer works in the whole process of the satellite entering orbit and after entering orbit. In the field of aerospace, due to the limited space of the aircraft, there is an urgent need for small and light equipment. Therefore, satell...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the prior art, and the existing S-band duplexers and multiplexers cannot meet the satellite requirements, the present invention proposes a space-borne S-band high-power low-pressure discharge duplexer, which uses high The dielectric constant ceramic dielectric is fully filled with waveguide filter structure. By silver-plating the outer surface of the ceramic dielectric, the electric wall of the waveguide filter is simulated, and the high dielectric constant of the ceramic is used to achieve the purpose of miniaturization of the equipment. There is no air inside the structure, and there is no Low pressure discharge problem

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