发明名称 |
Surface acoustic wave filter with a passband formed by a longitudinally coupled filter and a resonator inductance |
摘要 |
A surface acoustic wave filter includes a longitudinally-coupled resonator-type surface acoustic wave filter having at least two interdigital transducers disposed on a piezoelectric substrate along the propagation direction of a surface acoustic wave, and at least one surface acoustic wave resonator connected between an input terminal and/or an output terminal and the longitudinally-coupled resonator-type surface acoustic wave filter. In this surface acoustic wave filter, a pass band is formed by utilizing at least one of the resonant modes of the longitudinally-coupled resonator-type surface acoustic wave filter and the inductance of the surface acoustic wave resonator.
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申请公布号 |
US6556100(B2) |
申请公布日期 |
2003.04.29 |
申请号 |
US20010931780 |
申请日期 |
2001.08.17 |
申请人 |
MURATA MANUFACTURING CO., LTD. |
发明人 |
TAKAMINE YUICHI |
分类号 |
H03H9/00;H03H9/25;H03H9/64;H03H9/72;(IPC1-7):H03H9/64 |
主分类号 |
H03H9/00 |
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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