Title:
ELASTIC WAVE RESONATOR, ELASTIC WAVE FILTER, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/024778
Kind Code:
A1
Abstract:
Provided is an elastic wave resonator comprising a piezoelectric layer and an IDT electrode. The piezoelectric layer is piezoelectric. The IDT electrode is positioned on a first surface of the piezoelectric layer, and comprises a plurality of electrode fingers aligned in a first direction. The entire plurality of electrode fingers is positioned in an electrode finger arrangement region. The distance in the first direction from one side of one electrode finger to said one side of an electrode finger adjacent to the one electrode finger is defined as the pitch of the one electrode finger. The electrode finger arrangement region comprises a first region where the pitches of all of the electrode fingers differ from each other. The elastic wave resonator is configured to enable usage of plate waves or bulk waves as elastic waves that propagate through the electrode finger arrangement region.
Inventors:
ANDO TOMOHIRO (JP)
Application Number:
PCT/JP2023/027168
Publication Date:
February 01, 2024
Filing Date:
July 25, 2023
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
H03H9/145; H03H9/64; H03H9/72
Domestic Patent References:
| WO2021177108A1 | 2021-09-10 | |||
| WO2022085581A1 | 2022-04-28 | |||
| WO2019117133A1 | 2019-06-20 |
Foreign References:
| JP2021100280A | 2021-07-01 | |||
| JP2005176254A | 2005-06-30 | |||
| JPH09261001A | 1997-10-03 |
Attorney, Agent or Firm:
IIJIMA, YASUHIRO (JP)
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