Continuous adjustable millimeter wave waveguide attenuator

Abstract

A continuous adjustable millimeter wave waveguide attenuator disclosed by the present invention comprises a waveguide assembly, an absorber assembly placed inside the waveguide assembly and a differential screw fine tuning assembly. The absorber assembly comprises an absorber parallel with the E surface of a transmission waveguide, a sliding block capable of moving left and right along the interior of the waveguide assembly, a briquetting and a spring, the absorber is installed at the end part of the left side of the sliding block via the briquetting, the sliding block is equipped with a spring placement hole, and the spring is placed inside the sliding block. The waveguide assembly is equipped with a pin, and the pin is inserted in the spring placement hole. The left end of the spring presses against the pin, and the right end presses against the right end of the spring placement hole. The spring is located in a compression state, and the end part of the left side of the differential screw fine tuning assembly presses against the end part of the right side of the sliding block. According to the present invention, by utilizing the screw pitch difference generated during the rotation process of the differential screw fine tuning assembly, the size of the absorber screwed in the transmission waveguide is adjusted continuously and fine, thereby achieving the purpose of adjusting an attenuation value continuously.

Description

technical field [0001] The invention relates to a continuously adjustable millimeter wave waveguide attenuator. Background technique [0002] The millimeter wave waveguide attenuator in the prior art is a precision rotary polarization attenuator. This type of attenuator is composed of an input stator section, a central rotary section and an output stator section. Each section has an absorber. The input stator section and the output stator section are both square-circle conversion waveguide structures, and the central rotary section is a circular waveguide structure. Through The rotation of the central slewing section realizes the attenuation of the signal. However, the above-mentioned precision microwave gyropolarized attenuator has a complex structure, the structural parts include two square-circle conversion waveguides, and the thickness of the absorber material is only a few wires thick, which makes processing and assembly difficult, high cost, and the higher the frequen...

AI Technical Summary

Problems solved by technology

However, the above-mentioned precision microwave gyropolarized attenuator has a complex structure, the structural parts include two square-circle conversion waveguides, and the thickness of the absorber material is only a few wires thick, which makes processing and assembly difficult, high cost, and the higher the frequency, the more difficult processing and assembly will grow geometrically

With the continuous breakthrough of terahertz technology, the use frequency of attenuators is getting higher and higher, and the existing attenuators can no longer meet the continuous attenuation requirements at high frequencies

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