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A dual-frequency dual-mode gyroscopic traveling wave tube input coupler

A technology of input coupling and traveling wave tube, applied in the field of gyro-traveling wave tube input coupler, can solve the problem of single-band operation of input coupler

Active Publication Date: 2020-02-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the TWT input coupler can only work in a single frequency band, the present invention proposes a new TWT dual-band (Ku / Ka) dual-mode (TE11 / TE01) input coupler

Method used

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  • A dual-frequency dual-mode gyroscopic traveling wave tube input coupler
  • A dual-frequency dual-mode gyroscopic traveling wave tube input coupler
  • A dual-frequency dual-mode gyroscopic traveling wave tube input coupler

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Embodiment Construction

[0019] Below in conjunction with a dual-band (Ku / Ka band) input coupler design example and accompanying drawings of the double-working mode (TE11 / TE01 mode) the present invention is further elaborated:

[0020] Input signal mode: rectangular waveguide TE10 mode;

[0021] Working band 1 / frequency 1 / mode 1: Ku / 15.5GHz-18.5GHz / TE11

[0022] Working band 2 / frequency 2 / mode 2: Ka / 32GHz-36GHz / TE01

[0023] attached figure 1 It is a schematic diagram of a new dual-frequency dual-mode input coupler; figure 2 Side view of the new dual-band dual-mode input coupler; attached image 3 Top view of the new dual-band dual-mode input coupler. The invention includes: a TE11-mode input coupler working in the Ku band, a TE01-mode input coupler working in the Ka band, and a mode-selective cascaded reflection cavity between the two.

[0024] Among them, the TE01 mode input coupler working in the Ka band:

[0025] The first input rectangular waveguide 1: adopt the standard rectangular wavegu...

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Abstract

The invention discloses a dual-frequency dual-mode input coupler, which relates to the technical field of microwave and millimeter wave devices, in particular to a gyrotron traveling wave tube input coupler. The present invention adopts the following technical measures to realize: the structure of the dual-band (Ku / Ka band) dual working mode (TE11 / TE01 mode) input coupler has three main parts: the TE11 mode input coupler working in the Ku band, the Ka Band TE01 mode input coupler, and a cascaded reflective cavity structure with mode selection characteristics, so as to achieve the purpose of the invention. Compared with the traditional input coupler, the input coupler of the present invention can work not only in Ku but also in Ka band; it adopts a cascaded reflection cavity structure, which realizes the total reflection of TE01 mode and guarantees the unidirectional output of TE10 mode Circular waveguide output; fins are used to load attenuation material to achieve the competitive mode of attenuating TE01 mode.

Description

technical field [0001] The invention relates to the technical field of microwave and millimeter wave devices, in particular to an input coupler for a gyrotron traveling wave tube. Background technique [0002] The cyclotron traveling wave tube is a high-power, wide-band microwave and millimeter-wave amplifier with high power and wide-band characteristics. It has very important application prospects in the fields of millimeter-wave imaging radar, millimeter-wave communication systems, and electronic warfare. Therefore, Internationally respected. Some modern advanced radars and electronic countermeasures can effectively work in a wide frequency band, and even work across frequency bands, so it is often necessary to use several gyrotrons as microwave sources, which is not conducive to reducing the size of the entire system. And increase the cost of the whole equipment. Therefore, the gyrotron TWT that can work in multiple frequency bands at the same time has very important ap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J23/38
CPCH01J23/38
Inventor 徐勇孙淼彭廷会李洋王兆栋罗勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA