Research on Piezoelectric Transducer with Negative Impedance by FEM

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Abstract:

Piezoelectric transducer with negative impedance matching circuit is put forward to enhance its performance in broadband frequencies. The typical multi-physics problem is coupled with sound wave equations, structure stress-strain equations, piezoelectric constitutive equations and electric ordinary equations, and it is analyzed with FEM in detail. Frequency response characteristics are simulated when shunted with negative-impedance in series. When proper negative synthesized elements are connected, the performance of low frequencies and bandwidth are enhanced obviously.

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1634-1637

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June 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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