Title:
DIELECTRIC WAVEGUIDE FILTER
Document Type and Number:
WIPO Patent Application WO/2021/008005
Kind Code:
A1
Abstract:
The present invention relates to a dielectric waveguide filter, comprising a dielectric body. The dielectric body comprises a plurality of resonators, and the plurality of resonators are connected to each other; and the dielectric body further comprises at least one negative coupling hole, the at least one negative coupling hole is provided between two resonators connected to each other, so that negative coupling can be generated between the two resonators, thereby achieving capacitive cross coupling of the dielectric waveguide filter, enabling the dielectric waveguide filter to form at least one transmission zero at a low end of a passband. In the present invention, a negative coupling hole is provided between two resonators connected to each other, so that the dielectric waveguide filter forms at least one transmission zero at a low end of a passband. In addition, the provision of the negative coupling hole simplifies a manufacturing process, makes production easy, and can ensure miniaturization of the dielectric waveguide filter.
Inventors:
WU JIANWANG (CN)
ZHANG BO (CN)
DUAN ZONGJIN (CN)
ZHANG BO (CN)
DUAN ZONGJIN (CN)
Application Number:
PCT/CN2019/115067
Publication Date:
January 21, 2021
Filing Date:
November 01, 2019
Export Citation:
Assignee:
SHENZHEN GRENTECH RF COMMUNICATION LTD (CN)
International Classes:
H01P1/20
Foreign References:
| CN107994310A | 2018-05-04 | |||
| CN109904570A | 2019-06-18 | |||
| CN110265753A | 2019-09-20 | |||
| CN110265755A | 2019-09-20 | |||
| CN110137638A | 2019-08-16 | |||
| CN110148819A | 2019-08-20 | |||
| CN110048200A | 2019-07-23 | |||
| US20160028138A1 | 2016-01-28 |
Attorney, Agent or Firm:
IPINFO & LAWS OFFICE (CN)
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