发明名称 |
Electromechanical filter and resonator |
摘要 |
An electromechanical resonator, in the form of a single planar body, comprises a flexurally vibrating resonating element coupled at its midplane to a pair of torsionally vibrating couplers. Unwanted flexural modes in the resonator are substantially reduced by selecting a length-to-width ratio of the resonating element ranging between 3 and 4. A bandpass filter comprising a plurality of such electromechanical resonators may operate essentially free of spurious responses over a band of at least 200 kHz.
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申请公布号 |
US4137511(A) |
申请公布日期 |
1979.01.30 |
申请号 |
US19770832932 |
申请日期 |
1977.09.13 |
申请人 |
BELL TELEPHONE LABORATORIES, INCORPORATED |
发明人 |
JONES, JOSEPH S. |
分类号 |
H03H9/24;H03H9/46;H03H9/50;(IPC1-7):H03H9/04;H03H9/26 |
主分类号 |
H03H9/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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