Computation of Electromagnetic Energy Absorption in the Human Body Tissues by High Frequency Structure Simulator

This paper deals with the numerical computation of electromagnetic (EM) energy absorption by biological tissues. It is indeed one of the important challenges for the computational EM community to estimate rate of EM energy absorption by human tissues to asses the potential health hazard quantitatively. This is usually quantified in terms of SAR, which is the normalized rate of energy absorbed by the body exposed to EM radiation. The localized SAR indirectly related to the internal electric field and the major effort involves the determination of the electric field distribution within the biological tissues. In this work, evaluation of induced SAR in the human body due to EM waves emitted from a dipole antenna is made by using high frequency structure simulator (HFSS) software. Electromagnetic properties of human body parts such as; brain, blood, muscle and fat are used in the simulation. Normalized values of electric field, magnetic field, local and average SAR are calculated for 300MHz-1GHz frequency range.