Title :
A Green´s function approach to the reflection behavior of SAW in layered structures
Author_Institution :
Inst. fuer Festkorperphys., Werkstofforschung, Dresden, Germany
Abstract :
A Green´s function method is used to derive expressions for the mechanical part of complex SAW reflection coefficients for layered structures of any material symmetry with transverse perturbations of arbitrary shape and material symmetry. The computed data are in qualitative agreement with published results that have been derived using the variational principle or the perturbation theory. Deviations arise from quite different situations concerning the point of observing the reflected wave.<>
Keywords :
Green´s function methods; surface acoustic wave devices; Green´s function method; arbitrary shape; arrays of perturbations; complex SAW reflection coefficients; computed data; layered structures; material symmetry; mechanical part; perturbation theory; reflection behavior; transverse perturbations; variational principle; Boundary conditions; Green´s function methods; Partial differential equations; Reflection; Sandwich structures; Shape; Surface acoustic waves; Tensile stress; Transistors; Zinc oxide;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
