Substrate integrated waveguide-type cavity filter

A substrate-integrated waveguide and cavity filter technology, applied to waveguide devices, electrical components, circuits, etc., can solve the problems of difficult active circuit integration and large volume, and achieve high Q value, reduced volume, and reliable sex enhancing effect

Inactive Publication Date: 2016-10-12
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] Aiming at the defects of the background technology, the present invention proposes a new substrate-integrated waveguide cavity filter, which overcomes the defects that the traditional rectangular waveguide filter is not easy to integrate with the active circuit and the volume is too large

Method used

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  • Substrate integrated waveguide-type cavity filter
  • Substrate integrated waveguide-type cavity filter
  • Substrate integrated waveguide-type cavity filter

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Embodiment

[0025] Such as figure 1 and figure 2 As shown, a substrate-integrated waveguide cavity filter provided by the present invention includes an input microstrip line 1, a first resonant cavity 2, a second resonant cavity 3, a third resonant cavity 4, and a fourth resonant cavity 5 , the output microstrip line 6; the first resonant cavity 2, the second resonant cavity 3, the third resonant cavity 4, and the fourth resonant cavity 5 are substrate-integrated waveguide rectangular resonators with the same size; the input microstrip line connected to the first resonant cavity (also called input resonant cavity), and the output microstrip line is connected to the fourth resonant cavity (also called output resonant cavity); the first resonant cavity is adjacent to the fourth resonant cavity, and the second The resonant cavity is adjacent to the third resonant cavity, the first resonant cavity and the second resonant cavity are stacked up and down, and the third resonant cavity and the ...

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Abstract

The invention provides a substrate integrated waveguide-type cavity filter, and belongs to the technical field of microwave communication devices. The substrate integrated waveguide-type cavity filter comprises an input feeder, an output feeder and m*n*p substrate integrated waveguide resonators, wherein m, n and p are numbers of the substrate integrated waveguide resonators in an x direction, a y direction and a z direction in a three-dimensional coordinate system; the input feeder, the output feeder and the substrate integrated waveguide resonators are coupled in coplanar waveguide and metal post manners; the adjacent substrate integrated waveguide resonators are coupled in a metal post manner or a windowing manner; and the stacked substrate integrated waveguide resonators are coupled in the windowing manner. The substrate integrated waveguide-type cavity filter provided by the invention is beneficial to achievement of miniaturization of the filter and integration of an active circuit; and meanwhile, the substrate integrated waveguide-type cavity filter also has the advantages of integral fabrication, high reliability and the like.

Description

technical field [0001] The invention belongs to the technical field of microwave communication devices, in particular to a substrate-integrated waveguide cavity filter. Background technique [0002] Filters are widely used in communication, radar, signal processing and other system circuits. Common types of filters include cavity filters, LC filters, planar structure filters, micromechanical structure filters, crystal filters, bulk acoustic surface wave filter. Among them, compared with other forms of filters, cavity filters have great advantages in terms of insertion loss, Q value and power capacity. [0003] At present, common cavity filters are mainly made based on traditional waveguides (such as rectangular waveguides). This traditional waveguide filter has the advantages of high Q value, high power, and low loss; Depending on the wavelength, the size of the filter is large, and it is not easy to connect with the active circuit. Therefore, how to maintain the original...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/208
CPCH01P1/2088
Inventor 杨青慧郑向闻刘银中李元勋张怀武董师伶朱英超杜姗姗安照辉
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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