Title:
FILTER, MULTIPLEXER, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/203761
Kind Code:
A1
Abstract:
The present invention relates to the technical field of filters, and in particular to a filter, a multiplexer, and a communication device. In the filter, inductive coupling or capacitive coupling is added between different parallel branches, and an inductive coupling or capacitive coupling mode is used for the filter, such that the insertion loss performance of the filter does not deteriorate, and the out-of-band rejection characteristic of the filter can also be improved.
Inventors:
BIAN ZIPENG (CN)
PANG WEI (CN)
PANG WEI (CN)
Application Number:
PCT/CN2021/000058
Publication Date:
October 14, 2021
Filing Date:
April 07, 2021
Export Citation:
Assignee:
ROFS MICROSYSTEM TIANJIN CO LTD (CN)
International Classes:
H03H9/64
Foreign References:
| CN111431505A | 2020-07-17 | |||
| CN109643984A | 2019-04-16 | |||
| CN1369965A | 2002-09-18 | |||
| US20170179927A1 | 2017-06-22 | |||
| CN109831177A | 2019-05-31 | |||
| CN109787581A | 2019-05-21 | |||
| US20050231306A1 | 2005-10-20 |
Attorney, Agent or Firm:
CHINA SMART INTELLECTUAL PR0PERTY LTD. (CN)
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