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result sql = SPICE model for lossy piezoelectric polymers.
SPICE model for lossy piezoelectric polymers.
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result sql = This work presents the transmission line equivalent model for lossy piezoelectric polymers and its SPICE implementation. The model includes the mechanical/viscoelastic, dielectric/electrical, and piezoelectric/electromechanical losses in a novel way by using complex elastic, dielectric, and piezoelectric constants obtained from the measured impedances of PVDF and PVDF-TrFE samples by nonlinear regression technique. The equivalent circuit parameters are derived from analogies between a lossy electrical transmission line and acoustic wave propagation. The simulated impedance and phase plots of various samples, working in thickness mode, have been shown to agree well with the measured data.

Publication: IEEE Trans Ultrason Ferroelectr Freq Control 2009 Feb ;56(2)::387-95. :doi: 10.1109/TUFFC.2009.1048.
Publication Date: 2009 Feb
Study Author(s): Dahiya, Ravinder S;Valle, Maurizio;Lorenzelli, Leandro;
Institution: Department of Robotics, Brain and Cognitive Sciences, Italian Institute of Technology, Genoa, Italy. [email protected]
Shortcut link to this study:
This work presents the transmission line equivalent model for lossy piezoelectric polymers and its SPICE implementation. The model includes the mechanical/viscoelastic, dielectric/electrical, and piezoelectric/electromechanical losses in a novel way by using complex elastic, dielectric, and piezoelectric constants obtained from the measured impedances of PVDF and PVDF-TrFE samples by nonlinear regression technique. The equivalent circuit parameters are derived from analogies between a lossy electrical transmission line and acoustic wave propagation. The simulated impedance and phase plots of various samples, working in thickness mode, have been shown to agree well with the measured data.
PMID: 19251526

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