Invention Grant
US07830067B2 Elastic boundary wave device 失效
弹性边界波装置

Elastic boundary wave device
Abstract:
An elastic boundary wave device includes a first medium with piezoelectricity, an electrode exciting an elastic wave and provided on the first medium, a second medium made of a different material from the first medium and provided on the first medium to cover the electrode, and a sound absorbing portion provided on the second medium.
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