Effect of Electromagnetic Polarization on Whole-Body Average SAR in Infant Model for Far-Field Exposures

The present study investigated the whole-body averaged specific absorption rate (WBSAR) in a nine-month-old child model with the finite-difference time-domain method. Our attention is paid to the effect of polarization of incident electromagnetic wave on the WBSAR in the infant model. This is because most previous studies focused on the WBSAR for a plane-wave exposure with a vertically aligned electric field. Our computational results revealed that the WBSAR for a plane-wave exposure with a vertically aligned electric field is smaller than that with a horizontally aligned electric field for frequencies above 2 GHz. The main reason for this difference is attributed to be the difference in body surface area perpendicular to the electric field.