发明授权
- 专利标题： Crystal resonator with plural electrodes for use in a crystal oscillating device of a temperature compensation type
- 专利标题（中）： 具有用于温度补偿型晶体振荡器件的多个电极的晶体谐振器
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申请号： US660431申请日： 1991-02-22
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公开(公告)号： US5132643A公开(公告)日： 1992-07-21
- 发明人: Yoshifusa Ueno , Hiroaki Ishii , Hiroshi Shimizu
- 申请人： Yoshifusa Ueno , Hiroaki Ishii , Hiroshi Shimizu
- 申请人地址： JPX Tokyo
- 专利权人： Nihon Dempa Kogyo Co., Ltd.
- 当前专利权人： Nihon Dempa Kogyo Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX2-50453 19900228
- 主分类号： H03B5/32
- IPC分类号： H03B5/32 ; H03H9/02 ; H03H9/19 ; H03H9/56
摘要：
A crystal resonator with plural electrodes comprises a crystal piece, first, second and third pairs of electrodes. The crystal piece causes shear vibration. The first electrode pair is provided in the center of the crystal piece and coupled to a variable impedance. The second and third electrode pairs are provided on both sides of the first electrode pair. The second and third electrode pairs are electrically connected together and are coupled to an oscillation circuit.
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