Electromagnetic field computation in planar integrated structures with a biaxial grounded slab

A method based on the full wall analysis (FWA) is presented to treat analytically and evaluate numerically the electromagnetic field sustained by an electric source inside an electrically biaxial grounded slab embedded in an isotropic homogeneous half-space in the presence of a perfectly conducting finite patch located at the interface. As a prerequisite, the electric spectral (Fourier) dyadic Green´s function of the structure is developed and fully derived via the transmission-line analogy. Then the expression of the electric field in each region of the space in terms of the spectral electric Green´s dyad is given. The use of the boundary conditions allows one to determine a spectral electric integral equation (SEIE) for the electric current density induced on the scatterer´s surface. The solution of the SEIE is carried out in the general case of location of the electric sources with the patch parallel to the interface. Numerical computations are discussed