发明名称 |
Surface-acoustic-wave device having an improved pass-band characteristic and an improved degree of freedom for setting input and output impedances |
摘要 |
A piezoelectric substrate having two reflectors along a propagation path of a surface acoustic wave and three interdigital electrodes provided on said piezoelectric substrate consecutively between the reflectors. A primary side electrode is connected to an input/output terminal and a secondary side electrode is connected to a second input/output terminal. Each interdigital electrode includes include pairs of electrode fingers, where the pair of electrodes for one interdigital electrode is different than a pair of electrodes for another interdigital electrode.
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申请公布号 |
US6114926(A) |
申请公布日期 |
2000.09.05 |
申请号 |
US19990363693 |
申请日期 |
1999.07.30 |
申请人 |
FUJITSU LIMITED |
发明人 |
UEDA, MASANORI;ENDOH, GOU;KAWACHI, OSAMU;FUJIWARA, YOSHIRO |
分类号 |
H01L41/09;H03H9/00;H03H9/10;H03H9/145;H03H9/25;H03H9/64;(IPC1-7):H03H9/64 |
主分类号 |
H01L41/09 |
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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