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The experimental study of acoustic waves propagating in the structure “piezoelectric plate I -vacuum gap - piezoelectric plate II” was carried out. The plate I contained two interdigital transducers, which excited and received acoustic wave with shear- horizontal polarization. The piezoelectric plate II was set from above between transducers. For the certain orientation of the plate II the sharp equidistant...
The ways of the suppression of the undesired modes and Q-factor improvement in the lateral field excited resonators are demonstrated on the example of the lithium niobate crystal of X-cut. The values of resonance frequency and Q-factor for two crystallographic axes orientations of electric field were found by the measurements of the frequency dependencies of the real and imaginary parts of the electrical...
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