Abstract
By applying the equivalent scheme, the analysis of the acoustics surface wave reflection from the interdigital transducer has been carried out. The explicit form of the coefficient of reflection was found, from which the following terms have been separated – the magnitude of the mechanical wave reflection due to variation of the acoustics impedance in the area of transducer, and magnitude of the wave regeneration by the electrically loaded transducer. The results of calculations has been presented for the coefficient of surface wave reflection from the simple transducer with single and double electrodes as a function of its electrical load. The experimental verification has been undertaken for transducers on LiNbO3.References
[1] W. P. MASON, Physical Acoustics, vol. 1A, Mir, 1966.
[2] W. R. SMITH et al, IEEE Trans. MTT, 17, 11 (1969).
[3] E. DANICKY, J. FILIPIAK, WAT Report, 4, 296 (1977).
[4] J. FILIPIAK, The acoustics wave reflection on piezoelectric transducer in terms of the laminar system (to be published).
[5] E. DANICKY, Unified theory of interdigital transducer and SAW reflectors, J. Tech. Phys., 21, 3 (1980).
[6] A. J. DEVRIES, S. SUBRAMANIAN, Ultrasonics Symposium Proceedings, pp. 353-358, 1972.
[7] J. FILIPIAK, Application of the electrical sounder to research on the surface wave in piezoelectrics (to be published).
[8] W. R. SMITH, Experimental distinction between crossed-field and in-line three-part circuit models for interdigital transducers, IEEE Trans., vol. MTT-22, 11 (1974).
[2] W. R. SMITH et al, IEEE Trans. MTT, 17, 11 (1969).
[3] E. DANICKY, J. FILIPIAK, WAT Report, 4, 296 (1977).
[4] J. FILIPIAK, The acoustics wave reflection on piezoelectric transducer in terms of the laminar system (to be published).
[5] E. DANICKY, Unified theory of interdigital transducer and SAW reflectors, J. Tech. Phys., 21, 3 (1980).
[6] A. J. DEVRIES, S. SUBRAMANIAN, Ultrasonics Symposium Proceedings, pp. 353-358, 1972.
[7] J. FILIPIAK, Application of the electrical sounder to research on the surface wave in piezoelectrics (to be published).
[8] W. R. SMITH, Experimental distinction between crossed-field and in-line three-part circuit models for interdigital transducers, IEEE Trans., vol. MTT-22, 11 (1974).
