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Relates to measurements of piezoelectric ceramic resonators. Has been compiled tosupplement existing publications with particular attention to two important differences between the measurement of quartz crystal units as described in IEC Publication 302 and that of ceramic resonators. This concerns the determination of parameters which, as a result of the high electromechanical coupling associated with ceramic resonators, are quite different from the parameters of crystal units. In addition, not only resonator parameters but also material constants are frequently required to be evaluated in the case of ceramic resonators. An introductory review of the admittance characteristics and equivalent circuits of ceramic resonators is followed by methods for determining resonator parameters, and in turn material constants.
||Guide to dynamic measurements of piezoelectric ceramics with high electromechanical coupling