Diffraction of Electromagnetic Waves by a Semi-Infinite Screen in a Layered Medium

Abstract

The diffraction of a plane electromagnetic wave by a semi-infinite screen in one of the plane interfaces of a layered medium is investigated theoretically. The screen of vanishing thickness is assumed to be electrically perfectly conducting. Two separate two dimensional scalar problems are dealt with, viz. the case of E polarization and H polarization. The resulting unknown field functions are determined with the aid of the Wiener–Hopf technique. Subsequently, the electromagnetic power flow density is calculated at different locations and as a function of the electromagnetic contrast of the different media.