Four-mode dual-band filter based on a single rectangular SIW structure

A dual-band filter and filter technology, applied in the field of electronic information, can solve problems such as no source negative coupling, and achieve the effects of improving stop-band attenuation, low manufacturing process requirements, and high frequency selectivity
CN109149028AInactive Publication Date: 2019-01-04HANGZHOU DIANZI UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
HANGZHOU DIANZI UNIV
Publication Date
2019-01-04
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a dual-band bandpass filter based on a single rectangular SIW structure. The present invention is based on a rectangular SIW structure and controls the first four resonant modes of the filter, namely TE101, TE201, TE301 and TE401 modes, by using a method of metal via disturbance. TE101 and TE201 combine to form a first passband, TE301 and TE401 combine to form a second passband. In addition, the bandwidth and spacing of the two passbands can be tuned relatively independently by disturbing vias through movement. At the same time, the offset input and output feeders introduce four transmission zeros into the filter, which improves the stopband attenuation of the filter. By utilizing single SIW cavity mode reasonably, it meets the miniaturization requirement of modernmulti-standard RF system and solves the problems of large size and complex design of a traditional dual-band filter.
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Description

technical field

[0001] The invention belongs to the field of electronic information technology, specifically a quadruple-mode dual-band filter realized by using metal through-hole disturbance in a single rectangular substrate integrated waveguide (SIW) structure, which is a kind of rational utilization of cavity mode and good performance. Novel dual-band RF filter with stopband attenuation. Background technique

[0002] With the rapid development of modern wireless communication systems, highly compact and easy-to-integrate high-performance microwave and millimeter-wave bandpass filters (BPFs) are urgently needed. In the last decade, the emerging substrate-integrated waveguide (SIW) technology has taken a prominent place in the design of complex BPFs due to its advantages of low loss, low cost, high power handling capability, and high-density integration.

[0003] Meanwhile, with the development of wireless communication systems, dual-band or multi-band BPFs play a vital ro...

Claims

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