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A 90 over-mode waveguide te 01 -tm 11 mode changer

A mode conversion and over-mode waveguide technology, applied to waveguide devices, circuits, electrical components, etc., can solve problems such as inconvenient docking and limited working bandwidth, and achieve the effects of simple structure, improved efficiency, and symmetrical structure

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

[0007] For the existing TE in the background technology 01 -HE 11 In the mode conversion technology, there are problems of limited working bandwidth and irregular output angles that make docking inconvenient. The present invention provides a broadband, high-efficiency 90 over-mode waveguide TE 01 -TM 11 mode converter, the te 01 modulo efficiently converts to TM 11 Mode at the same time, realize 90-degree turn, easy to realize compact high-power millimeter-wave system

Method used

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  • A 90 over-mode waveguide te <sub>01</sub> -tm <sub>11</sub> mode changer
  • A 90 over-mode waveguide te <sub>01</sub> -tm <sub>11</sub> mode changer
  • A 90 over-mode waveguide te <sub>01</sub> -tm <sub>11</sub> mode changer

Examples

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Effect test

no. 1 example

[0049] In the case where the axial length of the input end is longer, that is, in In the case of , the passing angle is TE of the curved waveguide 01 Convert all to TM 11 mode, after After reaching the phase reversal stage, at this time TM 11 The mode has been partially converted to TE 01 , and TM 11 Mode Phase Lag TE 01 Mode 90 degrees. After phase reversal period TM 11 Mode ahead of TE 01 Mode 90 degrees. In the uniform phase shift section, each mode does not couple. After the uniform phase shift section, due to the bending of the waveguide, it enters the second mode conversion section, TE 01 mode to TM 11 mode conversion coupling. go through angle reaches the output port after the second mode transition segment, at which time TE 01 fully converted to TM 11 model.

[0050] In this embodiment, the axial length of the input end is relatively long, that is, The input waveguide radius is 12.4mm, the turning radius R of the first mode conversion section and ...

no. 2 example

[0054] In the case where the axial length of the input end is short, that is, in In the case of After the first mode change segment, TE 01 partially converted to TM 11 mode, at this time TM 11 Mode phase lead TE 01 Mode 90 degrees. After the phase reversal period, TM 11 mode with a phase lag of TE 01 Mode 90 degrees. After the uniform phase shifting section, the waveguide enters the second mode conversion section due to bending, so that TM 11 Mode to TE 01 mode conversion coupling. The elapsed angle in the second mode transition segment is After the bending section of , the excited TM 11 Pattern fully converted to TE 01 model. From to the output port process, TE 01 to TM 11 converted, fully converted to TM at the output port 11 model.

[0055] The structural parameters in this embodiment are as follows: the radius of the input circular waveguide is 12.6 mm. The turning radius R of the two mode conversion sections is 375 mm, and the angle of the first mod...

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Abstract

The invention discloses a 90 over-mode waveguide TE01‑TM11 mode converter, which belongs to the technical field of microwave and millimeter waves. The waveguide mode converter includes a first mode conversion section, a phase inversion section, a uniform phase shifting section and a second mode conversion section connected in sequence, and the transitions between the inner cavities of each section are smooth. The input port and the output port of the waveguide mode converter of the present invention are 90 degrees, which is convenient for system docking; while realizing a 90-degree turn, the working mode can be converted from TE01 to TM11 mode, and at the same time, it has the functions of a waveguide mode converter and an elbow , which is conducive to reducing the use of transmission devices and improving the efficiency of the entire system. The position of the phase reversal section can also be selected according to the actual situation, so as to adjust the axial lengths of the output end and the input end of the device according to the actual situation.

Description

technical field [0001] The invention belongs to the field of microwave and millimeter wave technology, and in particular relates to a high-power microwave overmode waveguide elbow mode converter. Background technique [0002] With the rapid development of technologies such as electronic countermeasures, microwave weapons, and radar communications, the millimeter-wave frequency band has received more and more attention, and has gradually become a hot spot for competition in the fields of military defense and civilian industry. In the 1990s, high-power millimeter-wave sources have made great progress, the most representative of which is the development of gyrotron devices. At present, a series of millimeter-wave high-power sources such as cyclotron oscillation tubes, cyclotron traveling wave amplifier tubes, cyclotron klystron amplifier tubes, and cyclotron return wave tubes have been developed internationally. In the family of gyrotron devices, gyrotron traveling wave tubes ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/163
CPCH01P1/163
Inventor 吴泽威廖校毅王建勋蒲友雷蒋伟罗勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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