Title :
Quasi-static discrete Green´s function for SAW devices
Author :
Morgan, David P.
Author_Institution :
Impulse Consulting, Northampton, UK
fDate :
4/1/2001 12:00:00 AM
Abstract :
A discrete Green´s function is derived for surface acoustic wave device analysis, giving the currents in an infinite array of regular electrodes when a voltage is applied to one electrode. Simple formulas are obtained by using the quasi-static approximation, which assumes the frequency to be such that electrode reflections are insignificant. The function exhibits distortion associated with the nonuniform charge distribution, and is shown to be causal
Keywords :
Green´s function methods; approximation theory; electric charge; surface acoustic wave devices; SAW devices; infinite array; nonuniform charge distribution; quasi-static approximation; quasi-static discrete Green´s function; regular electrodes; surface acoustic wave device analysis; Acoustic propagation; Acoustic waves; Admittance; Electrodes; Frequency; Green´s function methods; Power harmonic filters; Surface acoustic wave devices; Surface acoustic waves; Voltage;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
