Millimeter wave filter

A filter and millimeter-wave technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problems of electromagnetic energy leakage, discontinuity of energy transfer in the filter, etc., to reduce leakage, stable structure, and ensure consistency. Effect

Active Publication Date: 2021-01-01
WUHAN FINGU ELECTRONICS TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to use the surface-mount method to provide effective power feed for the millimeter-wave filter based on the LTCC process through the substrate, and to solve the matching of the filter at the surface-mount and the discontinuity and electromagnetic interference in the energy transfer process. energy leakage etc.

Method used

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than in...

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Abstract

The invention discloses a millimeter wave band-pass filter, which is characterized in that a feed line is set to be of a gradual change structure, and when the millimeter wave filter is arranged on afeed substrate and energy is transmitted between a first line and a second line, the discontinuity of transmission in different planes is reduced to some extent; on the contrary, the energy can be well fed into the millimeter wave filter from the feed substrate. Meanwhile, gaps are formed in the two sides of the feed circuit, and a notch is formed in the junction of the circuit of the millimeter wave filter and the feed circuit, so that the coplanar waveguide at the edge of the millimeter wave filter is effectively prevented from leaking when the feed substrate is surface-mounted, and the leakage of energy from the edge of the filter during signal contact is reduced; and signals are prevented from being directly coupled to the output end from the input end, and consistency of passband performance is guaranteed.

Description

technical field [0001] The invention relates to microwave device technology, in particular to a millimeter wave bandpass filter. Background technique [0002] The functions of microwave and millimeter wave circuit systems are becoming more and more complex, the index requirements are getting higher and higher, and the volume requirements are getting smaller and smaller. As an important part of the 5G millimeter wave communication circuit, the filter has become its main development trend in terms of miniaturization, high performance and integration. The substrate integrated waveguide (Substrate Integrated Waveguide, SIW) structure has the advantages of high Q value, low loss, small size, easy processing, and low cost, while the low temperature co-fired ceramics (Low Temperature Co-fired Ceramics, LTCC) technology It has the characteristics of high-density packaging, excellent high-frequency performance, fine wiring structure, and three-dimensional integration. SIW filters b...

Claims

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Application Information

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IPC IPC(8): H01P1/20
CPCH01P1/20
Inventor 许露钰李群朱晖王文珠杨涛
Owner WUHAN FINGU ELECTRONICS TECH
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