发明名称 |
Surface acoustic wave filter and communication apparatus |
摘要 |
A surface acoustic wave (SAW) filter includes a piezoelectric substrate. A resin pattern having a permittivity less than that of the piezoelectric substrate and first and second conductor patterns are disposed on the piezoelectric substrate. The first conductor pattern defines two one-terminal-pair SAW resonators and two longitudinally coupled resonator SAW filters. A portion of the second conductor pattern defines wiring traces having different potentials. Portions of the wiring traces facing each other in a plan view are disposed on the resin pattern.
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申请公布号 |
US7295089(B2) |
申请公布日期 |
2007.11.13 |
申请号 |
US20040773818 |
申请日期 |
2004.02.06 |
申请人 |
MURATA MANUFACTURING CO., LTD. |
发明人 |
SHIBAHARA TERUHISA;NAKAHASHI NORIHIKO;WATANABE HIROKI;TAKAMINE YUICHI |
分类号 |
H01P1/203;H03H9/64;H03H9/00;H03H9/145 |
主分类号 |
H01P1/203 |
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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