Title :
A fast Green´s function method for calculating bulk wave frequency responses from SAW frequency responses
Author :
Wagner, K.C. ; Männer, O.
Author_Institution :
Siemens AG, Munich, Germany
Abstract :
A method for the fast simulation of bulk wave second-order effects in SAW (surface acoustic wave) devices is described. It is shown that the bulk wave contribution to the total frequency response of a device can be computed from the real part of its surface wave frequency response. Similarly, the bulk wave input admittances can be found from the surface wave input conductances of the interdigital transducers. Being based on the electroacoustic Green´s function for a piezoelectric halfspace with unmetallized surface, the analysis takes the full spectrum of nonreflected bulk waves into account
Keywords :
Green´s function methods; frequency response; piezoelectric transducers; surface acoustic wave filters; ultrasonic transducers; Green´s function method; SAW filter; SAW frequency responses; bulk wave frequency responses; bulk wave input admittances; bulk wave second-order effects; electroacoustic Green´s function; fast simulation; interdigital transducers; piezoelectric halfspace; surface wave frequency response; surface wave input conductances; Admittance; Computational modeling; Convolution; Electrostatics; Frequency response; Green´s function methods; SAW filters; Surface acoustic wave devices; Surface acoustic waves; Surface waves;
Conference_Titel :
Ultrasonics Symposium, 1990. Proceedings., IEEE 1990
Conference_Location :
Honolulu, HI
DOI :
10.1109/ULTSYM.1990.171398
