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公开(公告)号：US4553060A
公开(公告)日：1985-11-12
申请号：US553614
申请日：1983-11-21
摘要： A torsional-mode resonator is produced by using an extensional mode transducer on a piece of material such as a metal bar where the transducer lies at an angle between the longitudinal axis of the material and the transverse axis. Placing the midpoint of the transducer at approximately the midpoint of the material such as the bar, optimizes the torsional effect. Further optimization may be obtained by making the transducer in the shape of a rhomboid.
摘要翻译： 通过在一块材料（例如金属棒）上使用拉伸模式换能器来产生扭转模式谐振器，其中换能器位于材料的纵向轴线与横向轴线之间的角度处。 将传感器的中点放置在材料（如棒）的大致中点处，可优化扭转效应。 通过将换能器制成菱形的形状可以获得进一步的优化。
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2.发明授权Mechanical filter apparatus having interchanged resonator means for improved coupling of bridging wires 失效具有互换的谐振器装置的机械滤波装置，用于改善桥接线的耦合
公开(公告)号：US4573028A
公开(公告)日：1986-02-25
申请号：US549046
申请日：1983-11-07
申请人： Donald P. Havens
发明人： Donald P. Havens
IPC分类号： H03H9/50
CPC分类号： H03H9/50
摘要： By exchanging the position of the input and output resonator means relative to other resonator elements in a mechanical filter, the lengths of the bridging wires used to control the steepness of the bandpass characteristic of the filter can be reduced. Reducing the length of the bridging wires reduces both flexural spurious mode problems and extensional coupling variation problems.
摘要翻译： 通过在机械滤波器中交换输入和输出谐振器装置相对于其它谐振器元件的位置，可以减少用于控制滤波器的带通特性的陡度的桥接线的长度。 减小桥接线的长度减少了弯曲寄生模式问题和拉伸耦合变化问题。
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公开(公告)号：US4405909A
公开(公告)日：1983-09-20
申请号：US335122
申请日：1981-12-28
CPC分类号： H03H9/50
摘要： A mechanical bandpass filter of the cascaded flexure mode resonator bar type is provided with a coupling structure improving strength an reducing rigid-body spurious modes. Coupling wires are provided on both the top and bottom surfaces of the resonator bars, not just in a single plane.
摘要翻译： 级联挠曲模式谐振杆型的机械带通滤波器具有耦合结构，提高了强度降低的刚体散射模式。 在谐振器杆的顶表面和底表面上都不设置耦合线，而不仅在单个平面上。
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