EM radiation and evaluation of Specific Absorption Rate (SAR) in human body exposed to wireless-base station fields at IIUM campus

This paper presents the simulated specific absorption rate (SAR) in the human body using the measured incident electric field strength from wireless-base stations operating at the frequencies in the microwave range from 2 to 4 GHz. The software XFDTD 6.4 from Remcom Inc is used to determine the amount of energy (SAR) absorbed in the human body. XFDTD 6.4 is a three-dimensional full wave electromagnetic solver based on the finite difference time domain (FDTD) method [1]. A tri-axis isotropic probe with portable spectrum analyzer FSH3 and RFEX software is used to measure the incident electric field and incident power densities for all existing signals ranging from 800 MHZ to 2.5 GHz at student hostels and office premises near base stations in International Islamic University Malaysia, Gombak campus. The measured levels of exposure and energy absorption are compared to the values allowed by Malaysia Communication and Multimedia Commission (MCMC), and American National Standards Institute/Institute of Electrical and Electronic Engineers (ANSI/IEEE) recommendations for safety guidelines.