Good resonance operating stabilities of piezoelectric SAW device structures using special perturbed multi-variable thermo-electromechanical finite element

Several highly nonlinear relations between disturbed surface acoustic wave (DSAW) and piezoelectric surface mount stress (PSMS) properties, temperature changes and electrode heights are computationally discovered, and quantitatively determined using a special new and effective perturbed multivariable thermal piezoelectric generalized plane strain finite element method (GPS FEM) with well-based shift and element static-condensation by improving plate element accuracies, in order to establish operating stabilities and design various potential high quality SAW resonating devices. Through executing the new codes on PC and Unix platforms, some new exclusive and fundamental results are included and provided.