ELECTROMAGNETIC ENERGY EXPOSURE OF SIMULATED USERS OF PORTABLE CELLULAR TELEPHONES

This paper describes a method to quantify the RF exposure of the users of portable cellular phones in terms of Specific Absorption Rate (SAR). The method involves a robotic system to accurately position an isotropic E-field probe within equivalent biological tissue, The user of cellular phones is simulated by a simple human model (a phantom) consisting of a thin shell of fiberglass filled with a liquid having the complex dielectric constant of human brain tissue. The paper presents the results of the dosimetric assays conducted using current and previous models of cellular telephones. The peak SAR values detected using the measurement method described herein are below the limits recommended by the National Council for Radiation Protection and Measurements (NCRP) Report 86 for the protection of humans exposed to RF electromagnetic energy.