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X-band broadband micro-strip band-pass filter

An X-band and filter technology, which is applied in the field of X-band broadband microstrip bandpass filters, can solve the problems of small size of filters and large volumes of X-band broadband microstrip bandpass filters, etc. Filter characteristics, the effect of maintaining filter characteristics

Inactive Publication Date: 2015-07-08
BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
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  • Abstract
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Problems solved by technology

[0004] In view of this, the purpose of the present invention is to solve the problem that the existing X-band broadband microstrip bandpass filter has a large volume, and propose a new type of X-band broadband microstrip bandpass filter. The parts are turned over to form a form of alternate arrangement up and down. Compared with the existing filters, the filter of the present invention has the characteristics of small size

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1-2 As shown, an X-band broadband microstrip bandpass filter of the present invention includes an input microstrip line part, an output microstrip line part, and a plurality of microstrip line structures; wherein, the arrangement of the multiple microstrip line structures They are alternately arranged up and down to form a left-right symmetrical structure, and the lengths of the parallel intersecting parts in each microstrip line structure are the same.

[0022] The present invention optimizes the arrangement of the main filter coupling unit of the traditional parallel coupled line microstrip filter (traditionally, the coupling unit composed of the microstrip line structure is arranged from top to bottom), and the filter designed by the present invention adopts The way of alternately arranged up and down has flipp...

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Abstract

The invention provides an X-band broadband micro-strip band-pass filter comprising an input micro-strip line part, an output micro-strip line part, and a plurality of micro-strip line structures. The micro-strip line structures are arranged in an up-and-down alternating way to form a structure of bilateral symmetry, and the parallel cross parts of all the micro-strip line structures are of the same length. The X-band broadband micro-strip band-pass filter of the invention is designed on the basis of a parallel coupled micro-strip band-pass filter, and part of parallel coupled resonance is overturned to make the micro-strip line structures arranged in an up-and-down alternating way to form a structure of bilateral symmetry. Under the same index, the design size of the X-band broadband micro-strip band-pass filter is greatly reduced compared with a traditional parallel coupled line filter, and the volume is about one third that of the traditional model.

Description

technical field [0001] The invention belongs to the technical field of radio frequency circuits, in particular to an X-band broadband 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 it is difficult to layout under certain fixed structures with strict structural requirements. . [0003] As the existing RF signal analysis instruments have higher requirements for volume and performance, it is a good trend to reduce the size of the filter module without reducing the performance of the module. If the existing d...

Claims

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Application Information

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IPC IPC(8): H01P1/203
Inventor 胡韵泽
Owner BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
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