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Patent Searching and Data


Title:
ELASTIC WAVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/071062
Kind Code:
A1
Abstract:
Provided is an elastic wave device with which it is possible to improve the response level in an attenuation range outside a passband. An elastic wave device 1 of the present invention is provided with a piezoelectric substrate 2, a first IDT electrode 3A provided on the piezoelectric substrate 2, and a first reflector 4A and a second reflector. Each of the first IDT electrode 3A, the first reflector 4A, and the second reflector has a plurality of electrode fingers. At least one of the first IDT electrode 3A, the first reflector 4A, and the second reflector includes an uneven duty ratio portion in which three electrode fingers disposed successively in an elastic wave propagation direction have different duty ratios.

Inventors:
NOGUCHI AKIRA (JP)
Application Number:
PCT/JP2021/034802
Publication Date:
April 07, 2022
Filing Date:
September 22, 2021
Export Citation:
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Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/145
Domestic Patent References:
WO2010047113A12010-04-29
WO2015198904A12015-12-30
Foreign References:
JPS63135010A1988-06-07
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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