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Comparison of SAR in CEMHM model with different resolution exposed to a handset antenna

Specific absorption rate (SAR) is employed here to study the relationship between the radiation of a mobile handset and the Chinese electromagnetic human model (CEMHM) with different resolution. In the paper, 3D anatomically realistic CEMHM models with different resolution are presented by the first time. The highest resolution CEMHM model is built using the Chinese Visible Human (CVH) data set containing 3640 serial axial anatomical images. In particular, the CEMHM model with a voxel resolution of up to 0. 16 × 0. 16 × 0. 25 mm for the head and 0. 16 × 0. 16 × 0. 5 mm for the rest of the body allows accurate modeling of 49 different human tissues and organs in the head model. The SAR in CEMHM head models exposed a handset antenna was studied and a dipole antenna working at 900MHz is used as an exposure source. Through the simulation, the averaged values of SAR per 1g tissue and 10g SAR are obtained. The simulation results show that the variation of maximum averaged 1g SAR values is more than 19% when the resolution changes up to 3. 04 × 3. 04 × 0.5. And the variation of maximum averaged 10g SAR values is more than 15% (Compared with SAR in the finest model).