Invention Grant
- Patent Title: Dielectric waveguide filter
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Application No.: US17437691Application Date: 2019-11-01
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Publication No.: US11271277B2Publication Date: 2022-03-08
- Inventor: Bo Zhang , Jianwang Wu , Zongjin Duan
- Applicant: SHENZHEN GRENTECH RF COMMUNICATION LIMITED , NANNING GRENTECH RF COMMUNICATION LIMITED
- Applicant Address: CN Guangdong; CN Guangxi
- Assignee: SHENZHEN GRENTECH RF COMMUNICATION LIMITED,NANNING GRENTECH RF COMMUNICATION LIMITED
- Current Assignee: SHENZHEN GRENTECH RF COMMUNICATION LIMITED,NANNING GRENTECH RF COMMUNICATION LIMITED
- Current Assignee Address: CN Guangdong; CN Guangxi
- Agency: Muncy, Geissler, Olds & Lowe, P.C.
- Priority: CN201910656198.1 20190719
- International Application: PCT/CN2019/115070 WO 20191101
- International Announcement: WO2021/012447 WO 20210128
- Main IPC: H01P1/20
- IPC: H01P1/20 ; H01P3/16
Abstract:
The present invention relates to a dielectric waveguide filter, comprising a dielectric substrate, wherein the dielectric substrate comprises a plurality of resonators; the plurality of resonators are connected to each other; the dielectric substrate further comprises a negative coupling blind hole; the negative coupling blind hole is arranged at a joint between two adjacent resonators; the two adjacent resonators are respectively provided with a tuning blind hole; and the tuning blind hole of one of the two adjacent resonators is connected to the negative coupling blind hole by a first coupling structure. The present invention can effectively suppress parasitic coupling of the dielectric waveguide filter.
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