Scattering from a finite size grounded dielectric substrate excited by a plane wave or an elementary dipole source

The electromagnetic radiation scattered by a conductive rectangular plate of infinitesimal thickness covered by a dielectric parallelepiped is analyzed for horizontal Hertzian dipole excitation or plane wave incidence. Using a global range Galerkin technique, the unknown electric field inside the dielectric layer is described as a superposition of plane waves, while, in describing the current density on the conductive plate surface, either Fourier-exponential or Chebyshev-series-type finite term expansions are employed. Numerical results are computed and presented for several scatterer dimensions and excitation types.<>