Investigating the excitation of acoustic waves in plates

The excitation of zero modes of acoustic waves in plates yz - LiNbO3 was considered. Single-phase arrays and interdigital transducers (VShP) for waves in plates are described by formulas for VShP of surface waves. The experiments were carried out on plates 80 microns thick where the symmetrical and antisymmetrical modes were excited in the range of 4.5-17 MHz. Measurement of the conductivity of transducer emission on frequency and the number of periods agree with those calculated theoretically. The introduced losses in the matched mode were 9-10 db at a band of 13 percent.