3 April 2008 Modeling of lossy piezoelectric polymers in SPICE
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Piezoelectric polymers have lossy and dispersive dielectric properties and exhibit higher viscoelastic losses. Due to their lossy behavior, the lossy models developed for piezoceramics are insufficient for evaluating polymers. In this work we present a novel SPICE implementation of piezoelectric polymers model which includes the mechanical, electromechanical and dielectric losses. The mechanical/viscoelastic, dielectric/electrical and piezoelectric/electromechanical losses have been included in the model by using complex elastic, dielectric and piezoelectric constants - obtained from measured impedance of PVDF-TrFE sample. The simulated impedance and phase plots of polymer, working in thickness mode, have been compared with measured data. The impedance and phase plots have also been compared with those obtained by using the lossy model approaches reported earlier.
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Ravinder S. Dahiya, Ravinder S. Dahiya, Maurizio Valle, Maurizio Valle, Giorgio Metta, Giorgio Metta, Leandro Lorenzelli, Leandro Lorenzelli, "Modeling of lossy piezoelectric polymers in SPICE", Proc. SPIE 6926, Modeling, Signal Processing, and Control for Smart Structures 2008, 69260Y (3 April 2008); doi: 10.1117/12.776839; https://doi.org/10.1117/12.776839

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