发明名称 |
Surface acoustic wave device |
摘要 |
A surface acoustic wave device has first and second surface acoustic wave filter elements which are arranged on a surface acoustic wave substrate so as to define a filter device having a two-stage configuration. A free surface portion is provided by forming a perforation in an inter-stage connecting portion connecting the first and second surface acoustic wave filter elements.
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申请公布号 |
US2004021530(A1) |
申请公布日期 |
2004.02.05 |
申请号 |
US20030460299 |
申请日期 |
2003.06.13 |
申请人 |
TAMAZAKI DAISUKE;NAKAO TAKESHI;YONEDA TOSHIMARO |
发明人 |
TAMAZAKI DAISUKE;NAKAO TAKESHI;YONEDA TOSHIMARO |
分类号 |
H03H9/25;H03H9/00;H03H9/02;H03H9/145;H03H9/64;(IPC1-7):H03H9/64 |
主分类号 |
H03H9/25 |
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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