发明名称 |
Acoustic wave device, resonator and filter |
摘要 |
A filter includes a parallel resonator having first comb electrodes provided on a piezoelectric substrate and a first dielectric film that covers the first comb electrodes, and a series resonator having second comb electrodes provided on the piezoelectric substrate and a second dielectric film covers the second comb electrodes and is made of a material identical to that of the first dielectric film. The first dielectric film has a different thickness from that of the second dielectric film.
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申请公布号 |
US2008074212(A1) |
申请公布日期 |
2008.03.27 |
申请号 |
US20070902800 |
申请日期 |
2007.09.25 |
申请人 |
FUJITSU LIMITED |
发明人 |
MATSUDA SATORU;MIURA MICHIO;INOUE SHOGO;MATSUDA TAKASHI;UEDA MASANORI;MITOBE SEIICHI |
分类号 |
H03H9/64;H03H9/25 |
主分类号 |
H03H9/64 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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