Determination of Safe Distance Limit from Cellular base Station Radiation Exposure using SAR Analysis

The remarkable growth of telecommunication industry resulted in boost in the number of cell-phone user everyday. Daily exposure to GSM-EMF has raised public concern of possible undesirable health effects to people living in the vicinity of base station (BS) antennas. The radiation exposure to EMF for a certain period of time will lead to health problem that is briefly explained in this paper. Presented here are measurements of incident electric field and obtained results are used for numerical prediction of Specific Absorption Rate (SAR) in order to check compliance for safety limits. This paper also presents the computed SAR in the human brain phantom model using measured field strengths from RF signals radiated by cellular BS operating in the 925 MHz band