Far-field radiation from a Hertzian dipole in the presence of a layered gyromagnetic medium

The far-field radiation of a Hertzian dipole for a two-layered gyromagnetic medium has been investigated using the dyadic Green's function. For this purpose, the symmetric property of DGFs has been employed to calculate the dyadic Green's function when an impulse source is placed above the gyromagnetic slab. After obtaining the far-field approximated DGFs, radiation fields are found for a dipole antenna in the presence of a gyromagnetic slab. Numerical results are obtained to examine the effects of a biasing magnetic field and other parameters.