SPICE model for lossy piezoelectric polymers

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 piezoele...

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Bibliographic Details
Published in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2009-02, Vol.56 (2), p.387-395
Main Authors: Dahiya, R., Valle, M., Lorenzelli, L.
Format: Article
Language:English
Subjects:
Acoustic measurements
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Constants
Dielectric constant
Dielectric loss measurement
Dielectric losses
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Elasticity
Exact sciences and technology
General equipment and techniques
Impedance measurement
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Physics
Piezoelectricity
Piezoelectricity and electromechanical effects
Polymers
Polyvinylidene fluorides
Propagation losses
SPICE
Spices
Transducers
Transmission line measurements
Transmission lines
Viscosity
Wave propagation
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Summary: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.
ISSN:0885-3010
1525-8955
DOI:10.1109/TUFFC.2009.1048