Title:
ACOUSTIC WAVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/008252
Kind Code:
A1
Abstract:
Provided is an acoustic wave device which can be made more compact and with which the effects of longitudinal mode ripple can be suppressed.
An acoustic wave device 1 is provided with reflectors 4, 5 which reflect an acoustic wave excited by an IDT electrode 3. The reflectors 4, 5 have a plurality of electrode fingers 15a to 15d and 16a to 16d. The thickness of at least one electrode finger from among the electrode fingers 15b to 15d and 16b to 16d, excluding the electrode fingers 15a and 16a closest to the IDT electrode 3, is greater than the thickness of electrode fingers 13, 14 in a central region A0 of the IDT electrode 3.
Inventors:
KYOUYA HARUKI (JP)
MIMURA MASAKAZU (JP)
TANIGUCHI YASUMASA (JP)
MIMURA MASAKAZU (JP)
TANIGUCHI YASUMASA (JP)
Application Number:
PCT/JP2017/018059
Publication Date:
January 11, 2018
Filing Date:
May 12, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/145
Domestic Patent References:
| WO2014192755A1 | 2014-12-04 |
Foreign References:
| JP2002290194A | 2002-10-04 | |||
| JP2013518455A | 2013-05-20 | |||
| JP2015111923A | 2015-06-18 |
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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