Absorption rate analysis of cellular phone radiation on the human head

In this paper the presented research work analyzes the effects of electromagnetic (EM) radiation of mobile phone on human head. The EM radiation is measured based on Specific Absorption Rate (SAR). The human head is generally exposed to mobile phones operating at communication (GSM, CDMA etc) frequency bands. The radiation absorption analyzed through simulations by applying frequency domain using Comsole Multiphysics software. The specific absorption rate (SAR) was measured for different positions of mobile phone. SARs exhibited in much lower values as the mobile phone held in far position from human brain. This measurement demonstrates SAR is high at close distance; effectively the temperature increase is also high as the distance reduces. Comparative analysis also shows that FR4 substrate demonstrates higher SAR and temp raise compared to Rogers RO3006 and Rogers RO4003 substrates.