Thermoregulatory response to dipole electromagnetic field exposure at 1800 MHz

Abstract

The rationale for deriving basic restrictions to EM field exposure and their associated safety margins are not fully standardized and diverse values are employed depending upon the thermal effect being considered. In this contribution, a human head slice is exposed to 1 W of power radiated by a half-wavelength dipole at a frequency of 1800 MHz. The hybridization between EM field exposure and the human thermoregulatory response has provided specific absorption rate (SAR) and temperature increase values for all tissues along the propagation direction for several dipole-human head distances. With the presented results, some interesting conclusions can be derived, although their extension to 3D models is limited. A marching effect and the skull being a protection for thermal stress due to EM field exposure have been confirmed. More accurate basic restrictions could be derived by combining SAR limits to the newly available temperature increase due to EM field exposure.