Title :
SPICE model for lossy piezoelectric polymers
Author :
Dahiya, Ravinder S. ; Valle, Maurizio ; Lorenzelli, Leandro
fDate :
2/1/2009 12:00:00 AM
Abstract :
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.
Keywords :
SPICE; acoustic wave propagation; dielectric losses; elastic constants; electric impedance; equivalent circuits; permittivity; piezoelectric materials; polymers; regression analysis; viscoelasticity; PVDF; PVDF-TrFE samples; SPICE model; acoustic wave propagation; dielectric constants; dielectric losses; elastic constants; electromechanical loss; equivalent circuit parameters; impedances; lossy piezoelectric polymers; nonlinear regression technique; piezoelectric constants; piezoelectric loss; transmission line equivalent model; viscoelastic losses; Acoustic measurements; Dielectric loss measurement; Dielectric losses; Elasticity; Impedance measurement; Polymers; Propagation losses; SPICE; Transmission line measurements; Viscosity;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2009.1048
