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Method of Measurements of the Attenuation Constant and the Electromechanical Coupling in Acoustic Resonators

Keywords:

G.D. Mansfel’d, S.G. Alekseev, N.I. Polzikova, I.M. Kotelyanskiy


It is shown that difference between the frequencies of modulus of electric impedance depends on both the electromechanical coupling constant and the attenuation coefficient in the acoustic resonator. Using simple expression , where Im Ze is a difference between the peculiarities on the frequency dependence of an imagine part of the electric impedance, that can be measured with network analyzer, the attenuation coefficient and the quality factor ( – resonant frequency) of any acoustic resonator can be easily evaluated. The expressions that can be used for evaluation of electromechanical coupling constant using data of the measurements of fre-quency dependencies of the modulus of Ze and Im Ze were obtained.
References:
Sept. 2, 2020
Aug. 27, 2020
June 24, 2020

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