Title:
ACOUSTIC WAVE FILTER, MULTIPLEXER, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/121904
Kind Code:
A1
Abstract:
Disclosed are an acoustic wave filter, a multiplexer, and a communication device, which contribute to improve nonlinear performance. The acoustic wave filter comprises a plurality of piezoelectric acoustic resonators, and at least one set of series split resonator groups is included. The set of series split resonator groups comprises at least a first split resonator and a second split resonator, one or more first additional resonators being connected in parallel to the first split resonator.
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Inventors:
CAI HUALIN (CN)
PANG WEI (CN)
PANG WEI (CN)
Application Number:
PCT/CN2021/136150
Publication Date:
June 16, 2022
Filing Date:
December 07, 2021
Export Citation:
Assignee:
ROFS MICROSYSTEM TIANJIN CO LTD (CN)
International Classes:
H03H9/54
Foreign References:
| CN112787622A | 2021-05-11 | |||
| CN109936344A | 2019-06-25 | |||
| CN110995195A | 2020-04-10 | |||
| CN111600571A | 2020-08-28 | |||
| US20190305746A1 | 2019-10-03 |
Attorney, Agent or Firm:
CHINA SMART INTELLECTUAL PROPERTY LTD. (CN)
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