A method, based on the Full Wave 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. As a prerequisite to this approach, the electric spectral (Fourier) dyadic Green's function of the structure is first 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. Finally numerical examples of evaluation of the radiated pattern and noteworthy information about the radiation on the horizon plane are shown with constraints on the electromagnetic parameters, thickness of the slab, working frequency and source position.
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