SCATTERING FROM A CONDUCTIVE RECTANGULAR PLATE COVERED BY A THICK DIELECTRIC LAYER AND EXCITED FROM A DIPOLE SOURCE OR A PLANE-WAVE

The scattering of electromagnetic radiation from a conductive rectangu lar plate of infinitesimal thickness covered by a dielectric parallele piped of arbitrary size is analyzed. An integral equation formulation is employed in terms of the electric field inside the dielectric layer and the surface current density on the conductive plate, and is solve d approximately by using entire domain Galerkin technique. The electri c field inside the dielectric layer is described in terms of a superpo sition of exponential waves while, in describing the surface current d ensity on the conductive plate, two types of entire domain basis funct ions are utilized: Either Fourier-exponential series or Chebyshev seri es type finite-term expansions are employed alternatively. Numerical r esults are computed and presented for several scatterer sizes and exci tation types.