Title:
FILTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/080142
Kind Code:
A1
Abstract:
Parallel arm resonators (301) include a parallel arm resonator (3011) and a parallel arm resonator (3012). The parallel arm resonators (301) are connected to a first terminal side of a serial arm resonator (201). The parallel arm resonators (302) are connected to a second terminal side of a serial arm resonator (202). The parallel arm resonators (301) have the parallel arm resonator (3011) and the parallel arm resonator (3012) each connected to a first terminal. The parallel arm resonator (3011) is directly connected to a ground. The parallel arm resonator (3012) is connected through a capacitor (40) to a ground. The parallel arm resonators (302) have a parallel arm resonator (3021) and a parallel arm resonator (3022) each connected to a second terminal. The parallel arm resonator (3021) is directly connected to a ground. The parallel arm resonator (3022) is connected through the capacitor (40) to a ground.
Inventors:
SUZUKI HIROYA (JP)
Application Number:
PCT/JP2022/040938
Publication Date:
May 11, 2023
Filing Date:
November 02, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/64
Domestic Patent References:
| WO2019188864A1 | 2019-10-03 | |||
| WO2018043610A1 | 2018-03-08 |
Foreign References:
| JP2014068123A | 2014-04-17 | |||
| JP2014120841A | 2014-06-30 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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