Analysis of SAR in Human Blood, Bones and Muscles due to Mobile Waves at 900MHz, 1800MHz and 2400MHz

摘要

Drastic increase in the usage of cell phones, increased the adverse effects of electromagnetic radiation on human body. The EM radiations emitted from the cell phone penetrate deep inside the body. The measured rate at which energy is absorbed by the human body when exposed to a radio frequency (RF) electromagnetic (EM) field is specific absorption rate (SAR). It is also defined as the power absorbed by the tissue per unit mass and is measure in watts per kilogram (W/kg). The present paper investigations have been made to estimate specific absorption rate of electromagnetic radiations inside human blood, muscle and bone as a function of frequency for different cellular frequency bands (800MHz - 900MHz), (1800MHz - 1900 MHz) and (2300MHz -2450Mhz), respectively. Results are obtained for different conductivities, resistivity values, permeability at the above frequency bands for blood, muscle and bone, and are presented in this paper. To develop the model, MATLAB tools were used and the results obtained are presented in this paper. These results are analyzed and are useful to compare the SAR values with recognized FCC standards.