Scattering by a strip with two different surface impedances

The plane wave diffraction by a strip with two different surface impedances is rigorously analyzed for both E and H polarizations using a new analytical-numerical approach. Applying the boundary condition to an integral representation of the scattered field, the problem is formulated in terms of simultaneous integral equations satisfied by the electric and magnetic current density functions. The integral equations are solved by the orthogonal polynomial expansion together with the use of the Fourier transform. Illustrative numerical examples of the radar cross section are presented and the far field scattering characteristics are discussed.