发明授权
US4602183A Surface acoustic wave device with a 3-phase unidirectional transducer
失效
具有三相单向传感器的表面声波装置
- 专利标题： Surface acoustic wave device with a 3-phase unidirectional transducer
- 专利标题（中）： 具有三相单向传感器的表面声波装置
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申请号： US509755申请日： 1983-06-30
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公开(公告)号： US4602183A公开(公告)日： 1986-07-22
- 发明人: Takeshi Okamoto , Shoichi Minagawa , Teruo Niitsuma
- 申请人： Takeshi Okamoto , Shoichi Minagawa , Teruo Niitsuma
- 申请人地址： JPX Tokyo
- 专利权人： Clarion Co., Ltd.
- 当前专利权人： Clarion Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX57-118060 19820706
- 主分类号： H03H3/08
- IPC分类号： H03H3/08 ; H03H9/02 ; H03H9/145 ; H03H9/42
摘要：
A surface acoustic wave device comprises an elastic substrate; a lower electrode provided on the elastic substrate; a piezo-electric film covering the lower electrode; and plural upper electrodes which each include plural electrode fingers and are aligned with and spaced from each other on the piezoelectric film in confrontation with the lower electrode.
公开/授权文献
- USD337130S Decal 公开/授权日：1993-07-06