Lateral Electromagnetic Pulses Generated by a Vertical Dipole on a Plane Boundary Between Dielectrics

Abstract

Approximate, quite simple formulas are derived for the transient field generated by a vertical electric dipole on the boundary between two dielectric half-spaces when the permittivity of one of these is much greater than that of the other. The three components of the field are determined for both delta-function and Gaussian-pulse excitation. The field of the former is compared with the corresponding exact expressions with generally good agreement and some interesting, readily explained differences.