Evaluation of electromagnetic power deposition in a spherical multilayer head in the near field of a linear antenna |
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Authors: | Cerri Graziano De Leo Roberto Rosellini Giacomo |
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Affiliation: | (1) Dipartimento di Elettronica ed Automatica, Universitá di Ancona, Via Brecce Bianche, 60131 Ancona, Italy |
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Abstract: | The canonical problem of the radiation of an elementary dipole close to a stratified sphere representing a simplified model of human head is investigated in this paper. The proposed approach is a flexible method of investigation about the influence on Specific Absorption Rate (S.A.R.) evaluation of tissue dielectric parameters and geometry as well as a useful tool to test numerical codes. The solution of the electromagnetic (e.m.) problem is achieved in a closed form; results highlight the position of maximum S.A.R. values and their dependence on frequency: for particular layer thicknesses and dielectric parameters, the maximum absorption can occur in the frequency range of cellular phones. |
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