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TE10 mode-to-TE20 mode broadband mode converter of rectangular waveguide

A rectangular waveguide and mode conversion technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problems of narrow operating frequency band and difficult processing, and achieve the effect of suppressing reflection, easy processing, and good performance.

Inactive Publication Date: 2016-08-03
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0004] In order to overcome the problem that the traditional rectangular waveguide TE10 mode to TE20 mode converter has a narrow operating frequency band, the relative bandwidth is generally only 10%-20%, and the processing difficulties caused by nonlinear bending, a new type of linear waveguide has been invented. Rectangular waveguide TE10 mode to TE20 mode broadband mode converter with tapered structure

Method used

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  • TE10 mode-to-TE20 mode broadband mode converter of rectangular waveguide
  • TE10 mode-to-TE20 mode broadband mode converter of rectangular waveguide
  • TE10 mode-to-TE20 mode broadband mode converter of rectangular waveguide

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Embodiment Construction

[0022] Below in conjunction with a design example of a rectangular waveguide TE10 mode to TE20 mode broadband mode converter working in the Ka band and the accompanying drawings, the present invention will be further elaborated:

[0023] The working center frequency point of the electromagnetic wave is determined by the following formula:

[0024] f0=f1+(f2-f1) / 2(1)

[0025] Among them, f0 is the center frequency point of the working band, f1 is the upper frequency point of the working band, and f2 is the lower frequency point of the working band.

[0026] The working wavelength of the electromagnetic wave at the center frequency point is determined by the following formula:

[0027] λ=C / f0(2)

[0028] Among them, λ is the working wavelength when the electromagnetic wave works at the center frequency point, and C is the speed of light in vacuum.

[0029] 1. Determine the cross-sectional size of the standard rectangular waveguide

[0030] Since the operating frequency is in...

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Abstract

The invention discloses a TE10 mode-to-TE20 mode broadband mode converter of a rectangular waveguide. The mode converter disclosed by the invention is characterized in that a linear slow transition structure is adopted, so that traveling wave state propagation can be implemented basically; waveguide boundary restriction conditions are used to control mode components in each segment of structure of the mode converter; the length of the second segment of T-shaped uniform transition waveguide is one fourth of an operating wavelength of center frequency, plays a role in impedance matching, can effectively restrain electromagnetic wave reflection caused by impedance mismatching, and can guarantee mode purity and high conversion efficiency of the mode converter to a certain extent; and meanwhile, optimal simulation is carried out to the lengths of the first segment and the third segment of the mode converter, so that good performance of the mode converter within a wide operating bandwidth is ensured.

Description

technical field [0001] The invention relates to the technical field of microwave and millimeter wave devices, in particular to a novel rectangular waveguide broadband mode converter from TE10 mode to TE20 mode. Background technique [0002] A mode converter is a microwave passive device widely used in microwave and millimeter wave technology fields. In the scientific research and engineering application of microwave and millimeter wave technology, it is necessary to use a mode converter to realize the wave mode conversion of microwave and millimeter wave in the transmission system, so as to facilitate the measurement, transmission, power distribution and power distribution of microwave and millimeter wave synthetic purpose. For example, in the process of air-to-air transmission and launch of high-power microwaves and millimeter waves, it is necessary to transform the high-power circular waveguide TE11 mode output by microwave and millimeter-wave sources into circular wavegu...

Claims

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Application Information

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IPC IPC(8): H01P1/163
CPCH01P1/163
Inventor 徐勇宗帅王兆栋李洋刘国蒋伟罗勇
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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