19 April 2007 Power loss consideration in wireless piezoelectric acoustic-electric power feedthru
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Abstract
Piezoelectric acoustic-electric power feedthru devices that are able to transfer electric power through metallic/ferromagnetic wall are investigated. Electric energy is converted to acoustic energy by piezoelectric transducer at one side of the wall. The acoustic wave propagates through the wall and, then, it is converted back to electric energy by another transducer on the other side. For high efficient transmission, it is critical that all the energy loss should be minimized. In addition to the electrical, mechanical and electromechanical loss in the transducers and the thickness of the wall, Lamb (plate) waves are excited by the transducers in the wall and they also result in energy losses. In this study, the energy loss caused by the Lamb waves are analyzed analytically and by finite element simulations. The results and the methods to reduce the loss are presented and discussed in this presentation.
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Zensheu Chang, Zensheu Chang, Xiaoqi Bao, Xiaoqi Bao, Benjamin J. Doty, Benjamin J. Doty, Stewart Sherrit, Stewart Sherrit, Yoseph Bar-Cohen, Yoseph Bar-Cohen, Mircea Badescu, Mircea Badescu, Jack Aldrich, Jack Aldrich, } "Power loss consideration in wireless piezoelectric acoustic-electric power feedthru", Proc. SPIE 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007, 652942 (19 April 2007); doi: 10.1117/12.716433; https://doi.org/10.1117/12.716433
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