Title :
COM-theory analysis of STW resonator structures
Author :
Boyanov, B.I. ; Djordjev, K.D. ; Strashilov, V.L. ; Avramov, I.D.
Author_Institution :
Dept. of Solid State Phys., Sofia Univ., Bulgaria
Abstract :
The dispersion characteristics of surface transverse waves (STWs) on 36° Y cut quartz substrate have been analysed numerically. A closed-form dispersion relation has been introduced in the equations of the coupling-of-modes (COM) theory to account for the variation of trapping with frequency. The transmission and reflection coefficients at the finger edges have been determined from the stopband characteristics. Introducing an electromechanical coupling which varies with the electrode mass loading, quantitative agreement with experimental results on 650 MHz two-port STW resonators has been achieved
Keywords :
acoustic dispersion; coupled mode analysis; frequency response; harmonic generation; interdigital transducers; surface acoustic wave resonators; 650 MHz; STW resonator structures; Y-cut quartz substrate; closed-form dispersion relation; coupling-of-modes theory; dispersion characteristics; electrode mass loading; electromechanical coupling; finger edges; reflection coefficients; stopband characteristics; surface skimming bulk waves; surface transverse waves; transmission coefficients; two-port STW resonators; Couplings; Dispersion; Electrodes; Equations; Frequency; Gratings; Physics; Reflection; Sawing machines; Surface waves;
Conference_Titel :
Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2940-6
DOI :
10.1109/ULTSYM.1995.495589
