A terahertz full-duplex waveguide rotary joint based on a diaphragm polarizer

Abstract

The invention discloses a terahertz full-duplex waveguide rotary joint based on a diaphragm polarizer, comprising a first diaphragm polarizer, a second diaphragm polarizer, a choke rotating sleeve, and a Four screws and four nuts for fixing the polarizer, the first diaphragm polarizer is composed of a first metal cavity, a first metal diaphragm, a first fixing flange, and a first connecting flange; The second diaphragm polarizer is composed of a second metal cavity, a second metal diaphragm, a second fixing flange, and a second connecting flange. The structure of the invention is convenient to disassemble, easy to replace and maintain, and the overall structure has the advantage of high integration. The angle-domain filtering functions of different frequencies and different angle ranges can be easily realized by replacing metasurface plates of different structural sizes or metasurface units of different structures, so it is applicable to a wide range of occasions.

Description

technical field [0001] The invention belongs to the technical field of microwave and millimeter wave circuits, and relates to a waveguide rotary joint. Background technique [0002] The waveguide rotary joint is a special waveguide structure. Its mechanical structure supports axial or radial rotation, and at the same time, it can ensure that its internal electromagnetic wave energy has good transmission characteristics at various rotation angles. In a mechanical scanning system, the antenna often needs to rotate through multiple angles in space. There must be relative rotational movement between the antenna and the fixed feed network. A waveguide rotary joint supports these rotations and propagates the microwave energy from the feed transmission line to the rotating antenna feed. [0003] With the rapid development of modern communication and radar systems, traditional single-channel waveguide rotary joints are difficult to meet the full-duplex communication requirements o...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the shortcomings of the traditional single-channel waveguide rotary joint, Liu Ming disclosed a two-way waveguide one-way coaxial rotary joint (Liu Ming, a two-way waveguide one-way coaxial rotary joint, Chinese invention patent, application number CN202110154238.X, Application date 2021.02.04), a multi-channel waveguide rotary joint is realized by adding graphite rings to the coaxial waveguide to form a multi-layer cavity structure, but it can only support radial rotation, and the coaxial structure limits its power capacity, so it cannot Satisfied full-duplex transmission of high-power microwave signals

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