发明申请
- 专利标题： Surface acoustic wave filter
- 专利标题（中）： 表面声波滤波器
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申请号： US11014164申请日： 2004-12-17
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公开(公告)号： US20050151601A1公开(公告)日： 2005-07-14
- 发明人: Hiroyuki Furusato , Osamu Kawachi
- 申请人： Hiroyuki Furusato , Osamu Kawachi
- 专利权人： Fujitsu Media Devices Limited
- 当前专利权人： Fujitsu Media Devices Limited
- 优先权： JP2003-423859 20031219
- 主分类号： H03H9/00
- IPC分类号： H03H9/00 ; H03H9/145 ; H03H9/64
摘要：
A SAW filter includes multiple SAW resonators. The multiple SAW resonators, which are connected in series, are connected any one of between a signal input terminal and a ground that is the closest thereto and between a signal output terminal and another ground that is the closest thereto. The SAW resonators have substantially equal electrostatic capacitances. It is thus possible to protect the SAW resonators without providing a sacrificial electrode for electrostatic breakdown, and thereby possible to configure the SAW filter having a high reliability against the electrostatic discharge.
公开/授权文献
- US07388456B2 Surface acoustic wave filter 公开/授权日：2008-06-17
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