Time-domain analysis of horizontal dipoles in front of planar dielectric interface

Time-domain solutions for fields due to an impulsive horizontal magnetic and electric dipole above a planar dielectric interface are studied analytically. General time-domain expressions for the Hertzian potentials corresponding to the electromagnetic fields in the upper medium are analyzed in a novel way by exploiting exact image theory. Analytic closed-form solutions are derived for certain special locations of the source and observation points. Some of the results are new, while the rest agree with the solutions in the literature