Title:
ACOUSTIC WAVE DEVICE, FILTER, BRANCHING APPARATUS, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/286705
Kind Code:
A1
Abstract:
Provided is an acoustic wave device, wherein a plurality of second electrode fingers are connected to a potential different from that of a plurality of first electrode fingers and are arranged alternately with the plurality of first electrode fingers in an acoustic wave propagation direction. The acoustic wave device has a crossing region in which the plurality of first electrode fingers and the plurality of second electrode fingers overlap in the acoustic wave propagation direction. The crossing region includes first to third regions. The first regions are located on the tip sides of the plurality of first electrode fingers. The second regions have a higher sound velocity than the first regions and are located closer to the center than the first regions in a direction in which the plurality of first electrode fingers and the plurality of second electrode fingers extend. The third regions are located closer to the center than the second regions and have a higher sound velocity than the second regions.
Inventors:
KANAZAWA TOMIO (JP)
Application Number:
PCT/JP2022/027084
Publication Date:
January 19, 2023
Filing Date:
July 08, 2022
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
H03H9/145; H03H9/25; H03H9/64; H03H9/72
Domestic Patent References:
| WO2018003338A1 | 2018-01-04 |
Foreign References:
| JP2019080093A | 2019-05-23 | |||
| CN110572136A | 2019-12-13 |
Attorney, Agent or Firm:
IIJIMA, YASUHIRO (JP)
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