The biological effect from mobile phone in human head

This paper presents the biological effect from mobile phone in human head based on the two variables including human head's mass averaged and the frequency. The outputs of the simulation are measured through Specific Absorption Rate (SAR), power loss density in human head and farfield from mobile phone. This work is simulated through the Specific Anthropomorphic Mannequin (SAM) of phantom head and a simple mobile phone. The methods applied in this simulation are based on two methods including Perfect Boundary Approximation (PBA) and Thin Sheet Technique (TST) for mesh dividing with transient or finite difference time domain method for numerical analysis. In summary, there are four conclusions based on this simulation. Firstly, the SAR values are in the range of 0.20-9.95 W/kg. Secondly, there are positive correlations of the SAR values with the two variables which are the mass tissue averaged and the frequency. Thirdly, the area of SAR value based on 1,800 MHz is the narrowest due to its -60 degree electric field direction. Finally, the power loss density is in reverse variation to the frequency.