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In this paper, effects of electrodes on the spectra of high-overtone bulk acoustic resonator are analyzed phenomenologically by numerical simulations. Acoustic impedance ratio of the substrate to piezo-film, Z/sub ab//Z/sub 0/, and acoustic impedance ratio of the electrode to piezo-film, Z/sub e//Z/sub 0/, are taken as the category parameters for different combinations of three kinds of substrates,...
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