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Analysis of SAR on human head modeling in metallic enclosures

This Paper proposes a pragmatic approach to determine and analyze the effects of radio frequency on human exposure in metallic enclosures. A scenario in which a mobile phone is used inside partially closed elevator and fully closed elevator are considered. Elevators are metallic enclosures but still known to have resonance and reflection effects, thereby increasing electric field strength and resulting of human exposure to electromagnetic absorptions. So this paper examines and compares the levels of absorption in terms of SAR values under various conditions. In this paper homogeneous human phantom with dielectric properties is designed and its interaction is studied with IFA antennas under three conditions free space, elevators in partially closed and full closed conditions. The results show that SAR values are increased in partially closed elevator and greatly increased in fully closed elevators as compared to free space for 900MHz band. The method of computation uses MOM and this is enabled by FEKO software.