SAR and Temperature Rise Distributions in a Human Head Due to a Multi-Frequency Antenna Source

Abstract

Temperature rise and specific absorption rate (SAR) distribution in a human head due to an antenna are evaluated at multiple frequencies in a single simulation. An algorithm is developed by integrating the Debye model of head tissues parameters into the finite-difference time-domain (FDTD) method by using the auxiliary differential equation (ADE) approach along with the use of bioheat equation for SAR and temperature computations. The tissue EM parameters are used from the available three-term Debye coefficients from 500 MHz to 20 GHz.