Fast integral equation based analysis of transient electromagnetic scattering from three-dimensional inhomogeneous lossy dielectric objects

This paper presents a fast scheme for studying transient scattering from and propagation through inhomogeneous lossy dielectric bodies. The analysis of fields in lossy media has diverse applications ranging from the study of skin effects in high-speed circuits to medical diagnostics to the analysis of interactions between antennas and biological media. Moreover, transient analysis methods are ideal for studying non-linear effects. This paper presents an accelerated marching-on-in-time (MOT) scheme to solve time domain volume integral equations pertinent to the study of lossy dielectrics. The classical solution scheme (MOT) is augmented with the plane wave time domain (PWTD) scheme, which leads to a considerable reduction in computational complexity.