Z-Transform-Based FDTD Implementations of Biaxial Anisotropy for Radar Target Scattering Problems

In this article, an efficient Z-transform-based finite-difference time-domain (Z-FDTD) is developed to implement and analyze electromagnetic scatterings in the 3D biaxial anisotropy. terms of Z-transform technique, we first discuss conversion relationship between time- or frequency-domain derivative operators corresponding Z-domain operator, then build up iteration from electric flux D converted field E based on dielectric tensor ? (and magnetic B H line with permeability ?) by combining constitutive formulations about As a result, iterative process Z-FDTD implementation can be smoothly carried out means Maxwell’s equations. To our knowledge, it inevitably necessary for absorbing boundary condition (ABC) considered scattering; hence, utilize unsplit-field complex-frequency-shifted perfectly matched layer (CFS-PML) truncate Z-FDTD’s physical region, capture radiation dipole. simulations, select two different anisotropic models validate proposed using popular commercial software COMSOL. Moreover, certain that those results are effective available scattering problems under oblique incidence executed method.