发明授权
- 专利标题： Frequency selector apparatus
- 专利标题（中）： 频率选择装置
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申请号： US44513申请日： 1979-06-01
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公开(公告)号： US4288765A公开(公告)日： 1981-09-08
- 发明人: Nobuo Mikoshiba , Shoichi Minagawa
- 申请人： Nobuo Mikoshiba , Shoichi Minagawa
- 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： JPX53/67289 19780606
- 主分类号： H03H9/25
- IPC分类号： H03H9/25 ; H03H3/08 ; H03H9/02 ; H03H9/05 ; H03H9/145 ; H03H9/64 ; H03H9/72 ; H03F7/00 ; H03H9/68
摘要：
A frequency selector apparatus which effects a frequency selection by providing at least one reflecting electrode at a position adjacent elastic surface wave transducer or transducers provided in an acoustic wave propagation track in a piezoelectric medium so as to reflect a frequency component selected by a parametric interaction with an a.c. electrical signal applied to said reflecting electrode.