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Coupling type cross-shaped resonator-based novel differential band-pass filter

A band-pass filter and resonator technology, applied in resonators, waveguide devices, electrical components, etc., can solve the problems of unsatisfactory common-mode rejection and large size of differential filters, and achieve controllable passband range and The effect of edge selection characteristics, low processing cost, and simple design process

Active Publication Date: 2015-03-11
THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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AI Technical Summary

Problems solved by technology

However, the common-mode rejection of differential filters obtained in many previous studies is not ideal and their size is relatively large

Method used

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  • Coupling type cross-shaped resonator-based novel differential band-pass filter
  • Coupling type cross-shaped resonator-based novel differential band-pass filter
  • Coupling type cross-shaped resonator-based novel differential band-pass filter

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Embodiment Construction

[0023] to combine Figure 1a , the present invention is a novel differential bandpass filter based on coupled cross-shaped resonators, including two mutually coupled cross-shaped resonators, each resonator is composed of seven microstrip lines, the left part of the microstrip The lines are the first microstrip line 1, the second microstrip line 2, the third microstrip line 3, the fourth microstrip line 4, the fifth microstrip line 5, the sixth microstrip line 6, and the seventh microstrip line 7. The first microstrip line 1 is located at the top, and is vertically symmetrical with the seventh microstrip line 7 about the symmetry line SS'. Symmetrical about the symmetry line SS', the third microstrip line 3 is located directly below the first microstrip line 1, connected to the first microstrip line 1 and the second microstrip line 2, and connected to the fifth microstrip line 5 Connected and symmetrical up and down with respect to the symmetry line SS', the fourth microstrip ...

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Abstract

The invention discloses a coupling type cross-shaped resonator-based novel differential band-pass filter. The coupling type cross-shaped resonator-based novel differential band-pass filter comprises two mutually-coupled cross-shaped resonators; seven microstrip lines are combined together so as to form each cross-shaped resonator; the first resonator comprises a first microstrip a second microstrip line, a third microstrip line, a fourth microstrip line, a fifth microstrip line, a sixth microstrip line, a seventh microstrip line, a first output port and a second output port, wherein the first microstrip line, the third microstrip line, the fifth microstrip line and the seventh microstrip line are arranged vertically, the second microstrip line, the fourth microstrip line and the sixth microstrip line are arranged horizontally, the fourth microstrip line is located at the transverse center position of the cross-shaped resonator, and the third microstrip line is connected with the fifth microstrip line.

Description

technical field [0001] The invention relates to the field of microwave and millimeter wave technology, and relates to a novel differential bandpass filter based on a coupled cross-shaped resonator. Background technique [0002] Severe noise interference is one of the factors that affect electronic equipment and make it difficult to perform optimally, and may even make the entire equipment not work properly. In order to solve this kind of problem, many experts and scholars have made great efforts, and finally focused on the filter to solve this problem. Filters are one of the most important and essential devices in communication equipment. Traditional bandpass filters are generally single-ended, that is, there is only one signal input port and one signal output port, and they can only selectively filter signals of different frequencies, and it is difficult to suppress common-mode noise. The new differential band-pass filter makes up for the shortcomings of single-ended devi...

Claims

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Application Information

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IPC IPC(8): H01P1/203H01P7/08
Inventor 王辉傅军何加浪孔俊俊蒋锴程序任志宏
Owner THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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