A small size ka-band broadband end-fed waveguide microstrip conversion structure

A waveguide-to-microstrip conversion, small-size technology, applied in waveguide-type devices, circuits, connecting devices, etc., can solve the problems of high assembly precision, complex printed circuits, and small overall size, reducing assembly difficulty and improving consistency. , the effect of good impedance matching

Active Publication Date: 2021-08-10
CNGC INST NO 206 OF CHINA ARMS IND GRP
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  • Abstract
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Problems solved by technology

[0004] The present invention mainly aims at the shortcomings of the existing Ka-band end-fed waveguide microstrip conversion circuit, such as too long size, complex printed circuit, and high assembly precision requirements, and designs a short floating section, single-sided printing, small overall size, and easy assembly. The waveguide microstrip conversion structure

Method used

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  • A small size ka-band broadband end-fed waveguide microstrip conversion structure
  • A small size ka-band broadband end-fed waveguide microstrip conversion structure
  • A small size ka-band broadband end-fed waveguide microstrip conversion structure

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Embodiment Construction

[0020] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0021] The small-sized Ka-band broadband end-fed waveguide microstrip conversion structure of the present invention is inserted from the end face of the rectangular waveguide through a microstrip probe, through a quarter-wavelength impedance conversion line for matching transition, and through the narrowed air cavity to the through port , connected to a quasi-triangular microstrip radiation probe with arc edges, the triangular radiation piece is only processed on one side of the dielectric plate and connected to the waveguide wall through the ground hole. The conversion section of this single-side etched pattern is different from the general fin line. It is a mixture of magnetic coupling and electrical coupling. The arc edge is similar to the current ring, which generates magnetic coupling in the waveguide cavity. The triangular type is similar to the ridge waveg...

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Abstract

The invention relates to a small-sized Ka-band broadband end-fed waveguide microstrip conversion structure, which combines two field coupling forms of a semi-circular arc current loop and a gradient ridge waveguide. Magnetic coupling and electrical coupling exist in the transition section. This double coupling The form ensures that it can be half the size of other structures, only 80% of the wavelength of the highest operating frequency, and the operating frequency band covers 30-43GHz.

Description

technical field [0001] The invention belongs to the field of circuit technology, and specifically utilizes waveguide and microstrip circuit to realize waveguide conversion section and realize the microstrip waveguide conversion function of Ka band wideband terminal input. Background technique [0002] With the continuous development of solid-state technology and MMIC technology, functional circuits such as frequency conversion, amplification, and gating in the millimeter wave band are all in the form of planar circuits, and the transmission between modules uses a microstrip structure, which will be unbearable due to large losses , so the microstrip waveguide conversion circuit becomes an indispensable unit. Although most millimeter-wave systems or modules use a 90° E-plane probe for the transition section, there are still many parts that need to use the end-fed form due to special restrictions. Commonly used end-fed structures mostly use ridge waveguide with impedance step ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/107
CPCH01P5/107
Inventor 李磊杨莉张安学武华锋湛婷
Owner CNGC INST NO 206 OF CHINA ARMS IND GRP
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