Title:
FILTER, RADIO FREQUENCY SYSTEM, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/123465
Kind Code:
A1
Abstract:
The present disclosure relates to a filter, a radio frequency system, and an electronic device. The filter generally comprises two resonators arranged up and down and a first coupling layer located between the two resonators. Each resonator comprises two electrodes arranged up and down and a piezoelectric layer located between the two electrodes. In the filter, at least one resonator comprises a material having an electromechanical coupling coefficient of not less than 20%. The solution can reasonably regulate and control the coupling strength between resonators of a filter, so that it is ensured that the filter has good filtering performance in a high-frequency range.
Inventors:
BAO JINGFU (CN)
WU TING (CN)
LI WUPING (CN)
HUANG YULIN (CN)
LI XINYI (CN)
GAO ZONGZHI (CN)
WU TING (CN)
LI WUPING (CN)
HUANG YULIN (CN)
LI XINYI (CN)
GAO ZONGZHI (CN)
Application Number:
PCT/CN2021/143938
Publication Date:
July 06, 2023
Filing Date:
December 31, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H03H9/54
Foreign References:
| CN110034744A | 2019-07-19 | |||
| CN102282764A | 2011-12-14 | |||
| CN204481097U | 2015-07-15 | |||
| CN109039296A | 2018-12-18 | |||
| CN108923766A | 2018-11-30 | |||
| US8610518B1 | 2013-12-17 |
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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