Multiple frequency flexure-mode resonator
阅读：699发布：2023-03-16
专利汇可以提供Multiple frequency flexure-mode resonator专利检索，专利查询，专利分析的服务。并且A flexure-mode resonator employs a plurality of switchable piezoelectric transducers which can be shorted out individually or in combination to provide multiple operating frequencies.，下面是Multiple frequency flexure-mode resonator专利的具体信息内容。
1. A multiple frequency flexure-mode resonator comprising: a metal bar having an electrode termination connected thereto, a plurality of piezoelectric transducers affixed to said bar along its length with each transducer having a metallically coated surface area with an electrode termination connected thereto and means for selectively shorting out said transducers individually or in combination by connecting the metal bar electrode termination to the electrode terminations of the transducers to be shorted out.
2. The resonator of claim 1 wherein said transducers are formed from a single piece of piezoelectric material and the separation between the metallically coated surface areas thereof is sufficient to essentially avoid electrical coupling between adjacent transducers.
3. The resonator of claim 1 wherein said bar has a rectangular shape.
4. The resonator of claim 1 wherein its resonant frequency is reduced by an amount Delta f for each transducer which is shorted out and Delta f equals k2f/2, where f equals the resonant frequency of the resonator and k equals the electromechanical coupling coefficient for the transducer which is to be shorted out.
5. The resonator of claim 1 wherein one of said transducers is provided solely for connection to an external circuit.
6. The resonator of claim 1 wherein two of said transducers are provided solely for connection to external input and output circUits respectively.
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