Closed form expressions for scattering matrix of simple targets in multilayer structures

Scattering matrix of a simple target embedded in multilayer planar structure is derived. The structure is excited by an elliptically polarized plane wave incident at an oblique angle. The calculation of the electromagnetic fields is performed in spectral domain. The scattering matrix of a planar electric dipole printed on upper interface and surrounding by free-space is evaluated. The obtained results agree with those existing on the literature for normal incidence case.