Title:
COUPLING STRUCTURE OF CAVITY FILTER, CAVITY FILTER AND DUPLEXER
Document Type and Number:
WIPO Patent Application WO/2016/106646
Kind Code:
A1
Abstract:
The present invention provides a coupling structure of a cavity filter, a cavity filter and a duplexer. The coupling structure comprises a resonator and a cross coupling body that is disposed opposite to the resonator and performs signal coupling. A metal sheet is disposed between the resonator and the cross coupling body, the metal sheet and a cavity of the cavity filter are integrally formed, and the metal sheet and the cross coupling body have signal coupling. According to the coupling structure of the present invention, the coupling between the cross coupling body and the resonator is converted into the coupling between the cross coupling body and the metal sheet; due to small tolerance of the distance between the metal sheet and the cross coupling body, consistent coupling between the cross coupling body and the resonator can be ensured, and the situation in the prior art that the cover plate of the filter needs to be removed to replace the cross coupling body can also be avoided, so that production efficiency is improved and costs are reduced.
Inventors:
WU WENJING (CN)
XU XIAOLIANG (CN)
LI HUA (CN)
XU XIAOLIANG (CN)
LI HUA (CN)
Application Number:
PCT/CN2014/095819
Publication Date:
July 07, 2016
Filing Date:
December 31, 2014
Export Citation:
Assignee:
SHENZHEN TATFOOK TECHNOLOGY CO (CN)
International Classes:
H01P5/00
Foreign References:
| CN202797213U | 2013-03-13 | |||
| CN203039060U | 2013-07-03 | |||
| CN103066349A | 2013-04-24 |
Attorney, Agent or Firm:
CHINA WISPRO INTELLECTUAL PROPERTY LLP. (CN)
深圳市威世博知识产权代理事务所（普通合伙） (CN)
深圳市威世博知识产权代理事务所（普通合伙） (CN)
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