SAR generated by commercial cellular phones - Phone modeling, head modeling, and measurements

This paper presents the computation of the specific absorption rate (SAR) g enerated by cellular phones inside an anatomical model of a head. Four mode ls of commercially available phones have been considered working at 900- an d 1800-MHz bands (global system for mobile communication system). The phone s have been modeled by using a computer-aided design representation obtaine d through the reverse engineering technique. Both SAR distributions and SAR averaged values have been computed inside the anatomical model of a head, by using the finite-difference time-domain method. Computations have been e xperimentally validated through measurements performed inside anthropomorph ic phantoms irradiated by a dipole and cellular phones.