Novel micro broadband microstrip band pass filter

Abstract

The invention discloses a novel micro broadband microstrip band pass filter. The novel micro broadband microstrip band pass filter comprises two symmetric three-wire coupling structures and a multi-mode resonator structure which are cascaded, wherein the multi-mode resonator structure is cascaded with the two symmetric three-wire coupling structures. The novel micro broadband microstrip band pass filter aims to realize miniaturization, easy adjustment and convenient engineering application. The novel micro broadband microstrip band pass filter is advantaged in that the multi-mode resonator structure is cascaded with the two symmetric three-wire coupling structures to realize the property, for engineering application design, simulation, optimization, processing and tests on multiple sets of different novel frequency band filters, signal screening and signal inhibition functions are accomplished, design dimensions are successfully reduced, application to design of a frequency conversion assembly module is successfully carried out, and system verification is realized.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a novel miniaturized wideband microstrip bandpass filter. Background technique [0002] The existing microstrip bandpass filter mainly relies on the design idea of ​​parallel coupled line bandpass filter, and then derives microstrip bandpass filter models such as hairpin filter and cross-coupled filter. The basic design idea is to use microstrip Multiple parallel resonator structures composed of striplines are used to complete the signal filtering function. In the existing microstrip bandpass filter design, the filter size is relatively large, and the physical parameters affecting electrical performance are generally extremely small, which cannot be debugged. Machining errors have a great impact, and it is difficult to layout under certain fixed structures with strict structural requirements. Contents of the invention [0003] In view of the above analysis, the present i...

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Problems solved by technology

[0002] The existing microstrip bandpass filter mainly relies on the design idea of ​​parallel coupled line bandpass filter, and then derives microstrip bandpass filter models such as hairpin filter and cross-coupled filter. The basic design idea is to use microstrip Multiple parallel resonator structures composed of striplines are used to complete the signal filtering function. In the existing microstrip bandpass filter design, the filter size is relatively large, and the physical parameters affecting electrical performance are generally extremely small, which cannot be debugged. Machining errors have a great impact, and it is difficult to layout under certain fixed structures with strict structural requirements

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