Title :
Effect of anisotropy on SAW behavior in LGS orientation with Euler angles (0°, 22°, 90°)
Author :
Naumenko, Natalya
Author_Institution :
Moscow Tech. Univ. of Commun. & Inf., Moscow, Russia
Abstract :
The nature of spurious responses observed experimentally in admittance function of SAW resonator on LGS cut with Euler angles (0°, 22°, 90°) is investigated. The resonator characteristics were found to be very sensitive to deviation of propagation direction from the required angle because of dramatically increasing interaction between SH and Rayleigh modes, in this LGS orientation. Analysis of velocity dispersion in the grating and visualization of acoustic fields associated with two SAW modes revealed the mechanism of interaction between the modes and the ways of reducing the effect of this interaction on resonator performance.
Keywords :
Rayleigh waves; gallium compounds; lanthanum compounds; surface acoustic wave resonators; surface acoustic waves; Euler angle; LGS orientation; La3Ga5SiO14; Rayleigh mode; SAW resonator; acoustic field visualization; anisotropy effect; shear horizontal mode; velocity dispersion analysis; Admittance; Dispersion; Electrodes; Gratings; Resonant frequency; Surface acoustic waves; Temperature sensors;
Conference_Titel :
Ultrasonics Symposium (IUS), 2011 IEEE International
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1253-1
DOI :
10.1109/ULTSYM.2011.0517
