发明授权
US07579931B2 Surface acoustic wave filter element, surface acoustic wave filter and communication device using the same
有权
表面声波滤波器元件，表面声波滤波器和通信装置使用相同
- 专利标题： Surface acoustic wave filter element, surface acoustic wave filter and communication device using the same
- 专利标题（中）： 表面声波滤波器元件，表面声波滤波器和通信装置使用相同
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申请号： US11166810申请日： 2005-06-24
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公开(公告)号： US07579931B2公开(公告)日： 2009-08-25
- 发明人: Hiroyuki Nakamura , Keiji Onishi , Akio Tsunekawa , Shigeru Tsuzuki
- 申请人： Hiroyuki Nakamura , Keiji Onishi , Akio Tsunekawa , Shigeru Tsuzuki
- 申请人地址： JP Osaka
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： RatnerPrestia
- 优先权： JP2001-330435 20011029
- 主分类号： H04B1/10
- IPC分类号： H04B1/10 ; H04B1/16
摘要：
A surface acoustic wave filter element has a piezoelectric substrate; and a plurality of inter-digital transducer (IDT) electrodes formed on the piezoelectric substrate, wherein at least one of the plurality of IDT electrodes is connected to a balanced type terminal and other IDT electrodes are connected to balanced type terminals or unbalanced type terminals, and first wiring electrode means which is connected or to be connected to the at least one IDT electrode and second wiring electrode means which is connected or to be connected to the other IDT electrodes are disposed on planes different from each other.
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