Electromagnetic Scattering from A Dielectric Coated Conducting Elliptic Cylinder Loading A Semi-Elliptic Channel In A Ground Plane

Abstract

Analytic solution to the problem of scattering of a plane electromagnetic wave by a dielectric coated confocal conducting elliptic cylinder loading a semi-elliptic channel is investigated. The incident, scattered and transmitted fields in every region are expressed in terms of Mathieu functions. Applying the boundary conditions at various interfaces along with the partial orthogonality properties of angular Mathieu functions, the unknown scattered and transmitted field coefficients are obtained and written in matrix form. The presented numerical results show that the presence of a dielectric coated conducting elliptic cylinder changes significantly the echo patterns width of the elliptic channel.