Title :
Optimal electrode shape and size of lateral-field-excited piezoelectric crystal resonators
Author :
Tingfeng Ma ; Chao Zhang ; Wenyan Wang ; Zhitian Zhang ; Guanping Feng
Author_Institution :
Dept. of Precision Instrum. & Mechanology, Tsinghua Univ., Beijing, China
fDate :
1/1/2011 12:00:00 AM
Abstract :
We determine optimal electrode shape and size of lateral-field-excited (LFE) thickness-shear resonators. The determined electrodes are optimal in that they satisfy the criterion for Bechmann´s number in every direction. Numerical and graphical results are provided for AT-cut quartz, (yxl)- 45°langasite, and (yxl)-16.5°LiTaO3 LFE resonators. The optimal electrodes of AT-cut quartz LFE resonators are also compared with those of AT-cut quartz thickness-field-excited (TFE) resonators.
Keywords :
crystal resonators; electrochemical electrodes; lithium compounds; numerical analysis; piezoelectric materials; AT-cut quartz; Bechmann number; LiTaO3; graphical results; lateral-field-excited piezoelectric crystal resonators; numerical results; optimal electrode shape; Acoustics; Charge carrier processes; Crystals; Electric fields; Electrodes; Shape; Vibrations;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2011.1796
