TE-scattering by conducting strips right on the planar interface of a three-layered medium

Two-dimensional scattering by one or two coplanar strips printed right on the interface of three-layered planar structures is investigated by combining the Fourier transform with powerful singular integral equation methods. The excitation is either the lowest incident TE (to strip axis) surface-wave mode or an incident, H-polarized plane wave. The kernel is most advantageously decomposed into a singular closed-form term and a fast convergent inverse Fourier integral. Treating all singular integrals by analytical and uniformly convergent algorithms leads to an efficient, accurate, and stable numerical code. Plotted numerical results reveal that, by a proper choice of certain geometrical parameters, the structures may become very efficient radiators