On the Radiation by a Surface Source Normally to the Boundary of a Half-Space and a Plane-Layered Structure

Abstract

Based on a rigorous theory of radiation from an elementary current source located at the boundary of a plane-layered structure, the radiation by an arbitrary surface current distribution is considered. A strict relationship is obtained between the normally radiated fields generated by an arbitrary external surface current distribution in the half-spaces surrounding the plane-layered structure. It is shown that the amplitude ratio of electric fields at the same distance from a source radiating in opposite directions normally to a plane-layered structure is determined by a simple algebraic expression involving the electromagnetic parameters of the media and the thickness of the films in the structure. Special cases of a surface source of radiation at the boundary of one homogeneous film and a surface source at the interface of two homogeneous half-spaces are considered.