Radiation and low-frequency scattering of EM waves in a generalanisotropic homogeneous medium |
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Authors: | Zhuck NP Omar AS |
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Affiliation: | Unique Broadband Syst. Inc., Markham, Ont.; |
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Abstract: | This paper focuses on a boundless homogeneous medium with general anisotropy of electromagnetic properties. The explicit exact form of the four spectral Green's dyads G?νξ(k) is obtained and a coordinate-free representation of the four spatial Green's functions G?νξ(x-x') in terms of one scalar potential W(x-x') is developed. On this basis, asymptotic expressions for the radiation field due to arbitrary sources are derived that show that the associated modes and the eigenmodes determine radiation along a singular optic axis and in all other directions, respectively. Using an integral equation approach and the theory of Newtonian potential, the problem of low-frequency scattering by a small anisotropic ellipsoidal body immersed into an anisotropic medium is solved analytically |
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