Title:
ELASTIC WAVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/053311
Kind Code:
A1
Abstract:
The present invention improves isolation characteristics while achieving a low profile. In a first elastic wave filter (1), a first conductor (3) is interposed between the first elastic wave filter (1) and a second elastic wave filter (2) and is connected to a second function conductor (E2) of the second elastic wave filter (2). The first elastic wave filter (1) comprises: a signal electrode (17) that is disposed on a second main surface (102) of a first piezoelectric substrate (10) and is connected to the first conductor (3); a ground electrode (18) that is disposed on the second main surface (102) of the first piezoelectric substrate (10); and a second conductor (7) connected to the ground electrode (18). The ground electrode (18) overlaps a first function conductor (E1) and does not overlap the signal electrode (17) in a plan view from the thickness direction (D1) of the first piezoelectric substrate (10). The second conductor (7) is disposed between the first main surface (101) and the second main surface (102) of the first piezoelectric substrate (10) and is separated from the first main surface (101).
Inventors:
FUJIMORI EIJI
Application Number:
PCT/JP2023/028741
Publication Date:
March 14, 2024
Filing Date:
August 07, 2023
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/25
Domestic Patent References:
| WO2018235433A1 | 2018-12-27 |
Foreign References:
| JP2022044314A | 2022-03-17 |
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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