Title :
Unconditionally stable ADI-FDTD formulations of the APML for frequency-dependent media
Author_Institution :
Comput. Eng. Dept., Eastern Mediterranean Univ., Mersin, Turkey
Abstract :
Unconditional stable formulations of the anisotropic perfectly matched layer (APML) are presented for truncating frequency-dependent media. The formulations are based on the auxiliary differential equation and the alternating direction implicit finite-difference time-domain (ADI-FDTD) methods. Numerical examples carried out in one and two dimensions show that the proposed formulations remain unconditionally stable with inclusion of material dispersion into ADI-FDTD implementation of APML.
Keywords :
anisotropic media; computational electromagnetics; differential equations; dispersion (wave); electromagnetic wave propagation; finite difference time-domain analysis; alternating direction implicit finite-difference time-domain methods; anisotropic perfectly matched layer; auxiliary differential equation; frequency-dependent media; material dispersion; unconditionally stable ADI-FDTD formulations; Anisotropic magnetoresistance; Conductivity; Differential equations; Electromagnetic scattering; Finite difference methods; Frequency; Perfectly matched layers; Permittivity; Stability; Time domain analysis; 65; ADI; APML; Alternating direction implicit; FDTD; anisotropic perfectly matched layer; auxiliary differential equation; finite-difference time-domain; frequency-dependent media;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2004.837060
