@article{arnold_electrical_2014,
	title = {Electrical {ImupneddearncAecoofusPtiieczLoeolaedcstric} {Ceramics}},
	abstract = {The electrical impedance of piezoelectric ceramics is in uenced by variations in its acoustic load. This is a very common situation for power ultrasonic applications in medicine where the irradiated media can present di erent interfaces and impedances to the propagating acoustic energy. In this work we analyzed the behavior of the resonances, anti-resonances and the e ective electromechanical coupling factor of a piezoelectric ceramic ring vibrating in thickness mode. The analysis is based on equivalent electrical circuits and considers variations in the acoustic load. The results showed that the electrical impedance of the ceramic is altered with the characteristics of the acoustic load, resulting in new resonances and changing the e ective electromechanical coupling factor. Electronic driving circuits for piezoelectric transducers must be able to dynamically adjust the frequencies when the acoustic load varies.},
	language = {en},
	author = {Arnold, Francisco J and Gonçalves, Marcos S and Roger, Leonardo L Bravo and Mühlen, Sérgio S},
	year = {2014},
	pages = {7},
}

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