Title :
Reduction of specific absorption rate (SAR) in the human head with materials and metamaterial
Author :
Islam, Mohammad Tariqul ; Misran, Norbahiah ; Ling, Tan Sue ; Faruque, Mohammad Rashed Iqbal
Author_Institution :
Inst. of Space Sci. (ANGKASA), Univ. Kebangsaan Malaysia, Bangi, Malaysia
Abstract :
The electromagnetic interaction between the antenna and the human head is reduced with materials and metamaterials. The reduction of specific absorption rate (SAR) with materials and metamaterial is performed by the finite-difference time-domain method with lossy-Drude model by CST Microwave Studio. The metamaterials can be obtained by arranging split ring resonators (SRRs) periodically. The SAR value has been observed by varying the distances between head model to phone model, different width, different thickness, and different height of material and metamaterial design. Materials has achieved 47.18% reduction of the initial SAR value while metamaterial achieved a reduction of 42.12%.These results can provide helpful information in designing the mobile communications equipments for safety compliance.
Keywords :
brain models; electromagnetic shielding; finite difference time-domain analysis; metamaterials; mobile antennas; mobile handsets; radiation protection; SAR; finite-difference time-domain method; human head; lossy-Drude model; metamaterial; mobile communications; specific absorption rate; split ring resonators; Biological materials; Cellular phones; Conducting materials; Humans; Magnetic heads; Magnetic materials; Metamaterials; Radio frequency; Sheet materials; Specific absorption rate; Antenna; Human Head; Lossy-Drude Model; Materials; Metamaterials; Resonators (SRRS); SAR; Symmetry; plit Ring;
Conference_Titel :
Electrical Engineering and Informatics, 2009. ICEEI '09. International Conference on
Conference_Location :
Selangor
Print_ISBN :
978-1-4244-4913-2
DOI :
10.1109/ICEEI.2009.5254727