Abstract
We consider a method of control over the operating frequency of a resonator on bulk acoustic waves, which is based on the selective excitation of eigenmodes. The frequency switching is achieved by using several layers of a ferroelectric in the paraelectric state and applying a control voltage of appropriate magnitude and polarity to each layer. The principle of selectivity is formulated and the criterion function is defined, which ensure the most effective excitation of a selected eigenmode with the possible suppression of parasitic modes. An example of using this function for a resonator switched between four eigenmodes is presented.
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Original Russian Text © A.K. Mikhailov, S.V. Ptashnik, A.B. Kozyrev, 2016, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2016, Vol. 42, No. 16, pp. 26–33.
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Mikhailov, A.K., Ptashnik, S.V. & Kozyrev, A.B. Selective excitation of eigenmodes in a multilayer thin film resonator on bulk acoustic waves. Tech. Phys. Lett. 42, 840–843 (2016). https://doi.org/10.1134/S1063785016080277
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DOI: https://doi.org/10.1134/S1063785016080277