Propagation of transients in dispersive dielectric media.

Abstract

Propagation of transient electromagnetic fields in dispersive dielectric media is studied. The dielectric medium is assumed to be linear, isotropic, and homogeneous and is described by the Debye model. Incident fields are assumed to be TEM plane wave pulses. The dielectric can assume the form of infinite half space or infinite circular cylinder; either of which may be homogeneous or stratified. The electric fields induced in the dielectric are calculated from Time Domain Maxwell's equations using Finite Difference Time Domain method. The results of this investigation can be used for geophysical probing, subsurface communication and for investigating possible biological effects of pulsed electromagnetic fields.