Effects of dielectric values of human eye models on specific absorption rate following rf exposure

Specific absorption rate (SAR) is employed here to study the relationship between the radiation of a mobile handset and the human eye models. In the paper, the SAR in two human eye models, whose dielectric values are increased from the original by ±10% and ±20% are studied using the finite-difference time-domain method. A dipole antenna is used as an exposure source at 1800MHz. Through the simulation, the averaged values of SAR per 1g tissue and point SAR at frequency 1800MHz are obtained. The simulation results show that the variation of maximum averaged 1g SAR values is less than 12% when the dielectric properties change up to 20% at the operationfrequency of 1800 MHz. The variation of point SAR values is almost 30% when the dielectric properties change up to 20% at the operationfrequency of 1800 MHz.