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Circular waveguide to rectangular waveguide dual-mode broadband directional coupler

A directional coupler, rectangular waveguide technology, applied in the direction of waveguide-type devices, circuits, connecting devices, etc., can solve problems such as difficulty in implementation

Active Publication Date: 2021-03-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To detect the working mode TE in the output link of the gyrotron TWT 01 mode signal, but also to monitor the TE 02 mode power content, which is difficult to achieve with conventional single-mode directional couplers

Method used

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  • Circular waveguide to rectangular waveguide dual-mode broadband directional coupler
  • Circular waveguide to rectangular waveguide dual-mode broadband directional coupler
  • Circular waveguide to rectangular waveguide dual-mode broadband directional coupler

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Embodiment Construction

[0041] The circular waveguide-to-rectangular waveguide dual-mode broadband directional coupler of this solution will be described below in conjunction with specific embodiments and accompanying drawings, wherein the schematic diagram (1) and cross-sectional view (2) of the circular waveguide-to-rectangular waveguide dual-mode broadband directional coupler in the accompanying drawings , Side view (3) Due to the need for drawing, the original 48 coupling holes in each row are simplified to 20 coupling holes in each row.

[0042] What propagates in the main waveguide (1) is the working mode TE of the convoluted TWT 01 mode, mixed with the parasitic mode TE of the cyclotron TWT 02 Mode, the working frequency range is 32GHz-36GHz.

[0043] attached figure 1is a schematic diagram of a circular waveguide to rectangular waveguide dual-mode broadband directional coupler, with figure 2 is a cross-sectional view of a circular waveguide to rectangular waveguide dual-mode broadband dir...

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Abstract

The invention discloses a circular waveguide-to-rectangular waveguide dual-mode broadband directional coupler, which belongs to the technical field of microwave and millimeter wave devices. Its structure includes a main waveguide, a non-standard rectangular sub-waveguide and a standard rectangular sub-waveguide symmetrically arranged outside the main waveguide, the main waveguide and the two sub-waveguides are respectively connected through a row of coupling holes, and a transition is set at both ends of the non-standard rectangular waveguide waveguide. A secondary waveguide is arranged on both sides of the main waveguide of the present invention, and the working mode TE of the convoluted traveling wave tube is in the main waveguide. 01 mode and parasitic TE 02 The two modes are coupled to different degrees in the two secondary waveguides through the coupling of the circular hole, and the working mode TE of the convoluted traveling wave tube is realized. 01 Mode detection while achieving TE against parasitic coupling 02 Mode power component monitoring. The invention also introduces a non-standard over-mode rectangular waveguide to achieve the purpose of expanding the working bandwidth of the over-mode circular waveguide directional coupler and reducing the fluctuation of coupling degree in the band.

Description

technical field [0001] The invention belongs to the technical field of microwave and millimeter wave devices, in particular to a circular waveguide-to-rectangular waveguide dual-mode broadband directional coupler for high-frequency output of a convoluted traveling wave tube. Background technique [0002] The directional coupler is a microwave and millimeter-wave device widely used in the field of microwave and millimeter-wave measurement. Its main function is to accurately sample the high-power signals transmitted in the microwave and millimeter-wave systems, and couple out a part of the microwave and millimeter-wave signals. , in order to perform time-domain envelope monitoring, power measurement, spectrum measurement, etc. on high-power signals transmitted in microwave and millimeter wave systems through oscilloscopes, small power meters, spectrum analyzers and other measuring instruments. [0003] Most traditional high-power microwave and millimeter wave systems use recta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/16
CPCH01P5/16
Inventor 徐勇孙淼刘智航李洋王兆栋彭廷会罗勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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