On the scalar scattering by a strip in a dissipative medium

Abstract

An approximate theory of the scalar scattering by a strip in a dissipative medium is established. The theory is suitable when the relations 1/Im (k)≪h≪d are satisfied by the width of the strip (2h), the smallest distance between the plane of the strip and the exciting sources (d) and the wave number (k). The expressions valid in the far-field approximation are obtained by simple manipulations. Some illustrative examples concerning the scattering of electromagnetic waves, emitted by Hertzian dipoles, by unidirectionally conducting strips are given.