Mini double-frequency band pass filter based on stacked substrate integrated waveguide

A medium-integrated waveguide, dual-band pass technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problems of large size, poor pass-band isolation, and poor selection performance of dual-band pass filters, and achieve a steep edge. Select features, small passband insertion loss, low cost effect

Active Publication Date: 2015-11-18
THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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Problems solved by technology

The dual-band bandpass filter designed by the traditional method has the disadvantages of large volume, large insertion loss, low Q value, poor isolation between passbands

Method used

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  • Mini double-frequency band pass filter based on stacked substrate integrated waveguide
  • Mini double-frequency band pass filter based on stacked substrate integrated waveguide
  • Mini double-frequency band pass filter based on stacked substrate integrated waveguide

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Embodiment Construction

[0031] The technical solution of the present invention will be further introduced below in combination with specific embodiments.

[0032] The invention discloses a miniaturized dual-frequency bandpass filter based on a stacked dielectric integrated waveguide, such as figure 1 As shown, there are three stacked dielectric-integrated waveguide resonators: the upper, middle and lower dielectric-integrated waveguide resonators; the upper dielectric-integrated waveguide resonator 1 and the lower dielectric-integrated waveguide resonator 2 have the same structure, and the two are placed in reverse, symmetrical about the center of the filter , and couple energy to each other through the middle dielectric integrated waveguide resonator 3; the upper dielectric integrated waveguide resonator 1 and the lower dielectric integrated waveguide resonator 2 have the same structure, and the above dielectric integrated waveguide resonator 1 is taken as an example here for introduction, as figur...

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Abstract

The invention discloses a mini double-frequency band pass filter based on stacked substrate integrated waveguide (SIW). The filter comprises an upper SIW resonator, a middle SIW resonator and a lower SIW resonator which are stacked, and the upper and lower SIW resonator are the same in structure, arranged reversely, symmetrical by taking the filter as the center, and couple energy mutually via the middle SIW resonator. Compared with microstrip lines and the like, the mini double-frequency band pass filter is higher in the Q value and power capacity, lower in the passband insertion loss, higher in the echo loss and higher isolation degree among passband has steep edge selection feature, realizes the optimization aim of miniaturaization, and is convenient to process and test, simple in structure and low in cost.

Description

technical field [0001] The invention relates to a dual-frequency band-pass filter, in particular to a miniaturized dual-frequency band-pass filter based on a stacked dielectric integrated waveguide. Background technique [0002] The filter is one of the indispensable and important components in the modern communication system, and its performance has a decisive impact on the communication quality of the communication system. With the development of communication technology, multi-standard and multi-frequency communication methods that can effectively improve communication quality and communication efficiency have also received more and more attention. The multi-standard mobile communication pattern requires communication equipment to support two or more communication systems to work at the same time. Therefore, a dual-band bandpass filter capable of supporting dual-band communication has attracted the attention of many researchers in recent years. The dual-band bandpass fi...

Claims

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Application Information

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IPC IPC(8): H01P1/203
Inventor 王辉蒋飞傅军何加浪任志宏杨怡蒋锴
Owner THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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