EM absorption and temperature increase in human bodies due to EM fields emitted from on-body transceivers at 2.45 GHz

The SAR and temperature increase in an inhomogeneous human model wearing clothes were studied under the irradiation of a patch antenna located at different locations on the human body surface at 2.45 GHz. From simulation results it is found that the highest layer-averaged SARs are in the order of 10^-3 to 10^-2 W/kg for the patch antenna located on different locations on the human body surface, which is far below the ANSI/IEEE safety guideline of 1.6 W/kg for 1 g of tissue or 2 W/kg for 10 g of tissue in uncontrolled environments. It is also found that the maximum temperature increases of 2.5×10^-2 °C is also far below the threshold temperature increase of 4.5 °C for neuron damage for more than 30 minutes and the temperature increase of 10 °C for thermal damage in the skin.