Title :
Loss in piezoelectric ceramic resonators
Author :
Pastore, R. ; Ballato, A. ; Cui, H.L.
Author_Institution :
US Army Commun.-Electron. Command, Fort Monmouth, NJ, USA
Abstract :
The purpose of this work is to explore the loss mechanism in piezoceramic material. This is done by combining the acoustic viscosity constants of the material with the elastic constant and forming a complex elastic constant. Then the one dimensional differential equations are solved with this as the elastic constant. The complex elastic coefficient suggests that the device has a complex resonant frequency. An experiment has been set up to apply a complex frequency to the device in the form of a decaying sine wave, and some preliminary results are presented. Equivalent circuit modeling of the device using transmission lines and controlled sources are used to simulate the device with a decaying sine wave as the excitation. Results are presented from these simulations
Keywords :
crystal resonators; equivalent circuits; piezoceramics; transmission line theory; acoustic viscosity constant; elastic constant; equivalent circuit; loss; one-dimensional differential equation; piezoelectric ceramic resonator; resonant frequency; transmission line model; Acoustic devices; Acoustic materials; Ceramics; Circuit simulation; Differential equations; Distributed parameter circuits; Equivalent circuits; Piezoelectric materials; Resonant frequency; Viscosity;
Conference_Titel :
Ultrasonics Symposium, 1999. Proceedings. 1999 IEEE
Conference_Location :
Caesars Tahoe, NV
Print_ISBN :
0-7803-5722-1
DOI :
10.1109/ULTSYM.1999.849142
