Abstract
The principle objectives of our research are twofold. We outline an exact general expression of dyadic Green's function (DGF) for the problem of electromagnetic radiation from a source of excitation in the presence of a layered spherical dielectric head model, which is valid everywhere, including the source region. The medium is assumed to be homogeneous, isotropic, linear, nondispersive, and stationary. The DGFs are obtained by employing the method of scattering superposition. Second, a compact alternative general representation is developed to determine the electric- and magnetic-type DGFs, giving clarity as well as more efficient and economical computation in terms of speed, time, and memory.
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