Abstract-In this paper, the electri

Abstract-In this paper, the electric voltage of a single-layer homogeneous and anisotropic composite material has been calculated developing a mathematical model based on the diffusion equation . The proposed model has based developed assuming the minimum wavelength of the source much longer than the greatest dimen-sion of the analyzed structures and charge relaxation time of the composite material smaller than any allowable rise time of field source. The finite-differrnce time-domain method,based on an explicit Scheme,has been used to solve the differential equa-tions and a scaling approach has been adopted to reduce computing time.
The obtained results carried have been compared with those obtained simulating an equivalent electrical circuit network using SPICE.A good agreement between these two methods has been ob-served.
Index Terms- Composite material, finite-difference timer-do-main,scaling approach.