COMPLETE EQUIVALENT CIRCUIT FOR RADIAL MODE OF PIEZOELECTRIC DISKS
S Chen · 1983
Radial mode resonator of a piezoelectric disk is extensively applied to piezoelectric measurement; it has been a major subject of piezoelectric measurement in international standardization. Mason investigated this mode at first, and he derived the electrical admittance formula and approximate equivalent circuit that is only correct to the vicinity of the fundamental frequency. In this article, based on the admittance formula derived by Mason and using the Mittag-Leffter's theorem the complete equivalent circuit has been derived that is applicable to any frequency. It is proved that the complete equivalent circuit corresponds to the strict analytic solution derived from wave equation.