Title:
ELASTIC WAVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/025040
Kind Code:
A1
Abstract:
Provided is an elastic wave device capable of suppressing ripples at or around the upper end of a stop band. An elastic wave device 1 in which IDT electrodes 7 are provided on a piezoelectric substrate 2, the IDT electrodes 7 having an inclined IDT structure. First electrode fingers 13 and second electrode fingers 14, when viewed in an elastic wave propagation direction, overlap in an intersecting region including a central region and a first and a second low acoustic velocity regions on both sides of the central region. The first and second low acoustic velocity regions are provided so as to form an asymmetric shape with respect to a central axis extending in the length direction of the first and second electrode fingers 13, 14.
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Inventors:
YAMANE TAKASHI (JP)
Application Number:
PCT/JP2021/027695
Publication Date:
February 03, 2022
Filing Date:
July 27, 2021
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/145; H03H9/25
Domestic Patent References:
| WO2018003273A1 | 2018-01-04 | |||
| WO2015198897A1 | 2015-12-30 |
Foreign References:
| JP2012186808A | 2012-09-27 |
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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