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A compact dual confocal waveguide gyroscopic traveling wave tube input coupler

A technology of input coupling and traveling wave tube, which is applied in the field of millimeter-wave vacuum electronic devices, can solve the problems of complex input structure and difficult processing of confocal waveguide gyro-traveling wave tube, and achieve simple structure, high-efficiency mode conversion, and wide operating frequency band Effect

Active Publication Date: 2022-07-29
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a compact double confocal waveguide gyrotraveling wave tube input coupler to solve the problems of complex input structure and difficult processing of the confocal waveguide gyrotraveling wave tube in the prior art

Method used

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  • A compact dual confocal waveguide gyroscopic traveling wave tube input coupler
  • A compact dual confocal waveguide gyroscopic traveling wave tube input coupler
  • A compact dual confocal waveguide gyroscopic traveling wave tube input coupler

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Embodiment 1

[0025] According to the above content, the input coupler of the present invention is fabricated, and the operating frequency of the coupler is 220 GHz. The working mode of the gyroscopic traveling wave tube is TE06 mode, and the input mode is TE10 mode. The main structural dimensions of the fabricated compact dual confocal waveguide gyroscopic traveling wave tube input coupler are as follows:

[0026] The standard rectangular waveguide 1 is a standard WR-5 rectangular waveguide (1.2954 mm×0.6477 mm). The dual confocal waveguide is a gradient structure, in which the cut-off section L1=4.3mm, the cut-off section curvature radius R1=3.46mm; the straight section L2=5.6mm, the straight-section curvature radius R2=4.3mm; the output section L3=7mm, the output section The radius of curvature R3=4.52mm; the width of the mirror surface is 2a, where the value of a ranges from 1.5mm to 2.4mm. In order to obtain the optimal mode conversion efficiency, in Example 1, the value of a is 1.6mm...

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Abstract

The invention belongs to the field of millimeter-wave vacuum electronic devices, in particular to a compact dual confocal waveguide gyro traveling wave tube input coupler, comprising a dual confocal waveguide and a standard rectangular waveguide; Open confocal waveguide mirror surface; 4 open confocal waveguide mirror surfaces have the same size, and the mirror surface spacing and curvature radius between them are equal; the standard rectangular waveguide is used as an input waveguide, and is vertically arranged on one of the open confocal waveguide mirror surfaces, and A coupling hole is opened at the connection between the open confocal waveguide mirror and the standard rectangular waveguide; the fundamental mode in the standard rectangular waveguide enters the dual confocal waveguide through the coupling hole, and excites the required working mode of the gyroscopic traveling wave tube, completing the Mode conversion of electromagnetic waves. Compared with the confocal waveguide mode converter in the prior art, the input coupler of the present invention has the characteristics of simple structure, easy processing, can be used for experimental testing and has a wide operating frequency band.

Description

technical field [0001] The invention belongs to the field of millimeter wave vacuum electronic devices, and relates to a waveguide mode converter, in particular to a compact double confocal waveguide gyro traveling wave tube input coupler, which can be applied to the gyro traveling wave operating in the millimeter wave and terahertz bands Tube. Background technique [0002] Gyrotron traveling wave tube is an electric vacuum device that amplifies the input microwave signal. It has the characteristics of high power, wide bandwidth and high gain. It has been widely used in the fields of electronic countermeasures, radar systems and high-speed wireless communications. [0003] The cyclotron traveling wave tube adopts the fast-wave transverse transduction working mode, and uses the input signal to modulate the velocity of the cyclotron electron beam. Due to the relativistic mass effect, it gradually forms an angular cluster, and the energy is exchanged in the beam-wave interactio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J23/40H01J25/34
CPCH01J23/40H01J25/34
Inventor 张佳一关晓通傅文杰鄢扬
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA