Title :
The equation for the rectangular strip impedance and the structure of its solution
Author :
Biryukov, Sergey V. ; Polevoi, V.G. ; Weihnacht, M.
Author_Institution :
Mints Radiotechnical Inst., Moscow, Russia
Abstract :
A novel method for determining the surface impedance of a rectangular isotropic strip is proposed. The impedance describes the relation between the displacement and stress distributions on one side of the strip if its other three sides are free from stresses. The calculation of that relation is most important for taking into account the mechanical influence of surface electrodes with finite thickness on the SAW device characteristics. The method is based on the known nonlinear integro-differential equation for the surface impedance, which relates exactly the impedance matrix with material parameters and the width and the thickness of the strip.
Keywords :
impedance matrix; inhomogeneous media; integro-differential equations; nonlinear differential equations; surface acoustic wave devices; surface acoustic waves; Fourier domain; SAW device characteristics; displacement; finite thickness; impedance matrix; inhomogeneous medium; material parameters; mechanical influence; nonlinear integro-differential equation; rectangular isotropic strip; rectangular strip impedance; stress distribution; strip thickness; strip width; surface electrodes; surface impedance; Acoustic waves; Electrodes; Integrodifferential equations; Nonlinear equations; Polarization; Strips; Surface acoustic wave devices; Surface acoustic waves; Surface impedance; Tensile stress;
Conference_Titel :
Ultrasonics Symposium, 1999. Proceedings. 1999 IEEE
Conference_Location :
Caesars Tahoe, NV
Print_ISBN :
0-7803-5722-1
DOI :
10.1109/ULTSYM.1999.849385
