发明授权
US5151672A Trap circuit comprising plural piezoelectric resonators interconnected
by plural resistors and an inductor
失效
陷波电路包括由多个电阻器和电感器互连的多个压电谐振器
- 专利标题： Trap circuit comprising plural piezoelectric resonators interconnected by plural resistors and an inductor
- 专利标题（中）： 陷波电路包括由多个电阻器和电感器互连的多个压电谐振器
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申请号： US627025申请日： 1990-12-13
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公开(公告)号： US5151672A公开(公告)日： 1992-09-29
- 发明人: Kazuyuki Noto , Isao Toyoshima
- 申请人： Kazuyuki Noto , Isao Toyoshima
- 申请人地址： JPX Nagaokakyo
- 专利权人： Murata Manufacturing Co.
- 当前专利权人： Murata Manufacturing Co.
- 当前专利权人地址： JPX Nagaokakyo
- 优先权： JPX1-325383 19891214
- 主分类号： H03H9/54
- IPC分类号： H03H9/54 ; H03H9/58
摘要：
In a trap circuit a plurality of cascade-connected three-terminal piezoelectric ceramic resonators having different resonance frequencies, an inductor is connected between input and output terminals of only the resonator having the lowest resonance frequency, and a resistor is connected between input and output terminals of each remaining resonator, so that large attenuation is attained at the respective resonance frequencies and a large attenuation is attained in intermediate regions between the resonance frequencies. Thus, unwanted signals can be eliminated over a large bandwidth.
公开/授权文献
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