Power Density and SAR in Multi-Layered Life Tissue at Global System Mobile (GSM) Frequencies

Abstract

In this paper, the power density and specific absorption rate (SAR) distribution in multi-layered life tissues and exposed to electromagnetic field emitted from handheld cellular phone operating in the 900 MHz and 1800 MHz is studied. A One dimensional Finite-Difference Time-Domain (FDTD) method has been used, and numerical assessment of electromagnetic fields coupled to four biological body tissue. Values of interest in these assessments include induced electric field and specific absorption rate (SAR), which has been a measured of absorbed power density in the body have been evaluated. A comparison of the effect of two frequencies on human body tissue has shown graphically. The results noticed that the effect of frequency 900 MHz by mobile phone Global System Mobile (GSM) is more than the frequency of 1800 MHz.