Title :
A new method of determining the equivalent circuit parameters of piezoelectric resonators and analysis of the piezoelectric loading effect
Author :
Kim, J.S. ; Choi, K. ; Yu, I.
Author_Institution :
Dept. of Phys., Seoul Nat. Univ., South Korea
fDate :
7/1/1993 12:00:00 AM
Abstract :
An inductive method of piezoelectric resonance detection is applied to the determination of equivalent circuit parameters of piezoelectric resonators. Using this method one can measure the resonance frequency and mechanical Q-factor of a resonator directly as well as their dependences on the electrical impedance which is connected to the resonator. From the equivalent circuit analysis the changes in resonance frequency and Q-factor due to the piezoelectric loading effects are determined. Measurements on two typical commercial piezoelectric resonators, an AT-cut quartz crystal and a PZT ceramic resonator, are in good agreement with the analysis.<>
Keywords :
Q-factor; crystal resonators; equivalent circuits; AT-cut quartz crystal; PZT ceramic resonator; PbZrO3TiO3; SiO/sub 2/; electrical impedance; equivalent circuit parameters; inductive method; mechanical Q-factor; piezoelectric loading effect; piezoelectric resonators; resonance frequency; Ceramics; Circuit analysis; Electric variables measurement; Equivalent circuits; Frequency measurement; Impedance measurement; Mechanical variables measurement; Q factor; Resonance; Resonant frequency;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
