FDTD Computation of Sar Distributions in Human Head for Mobile Phones

TLDR: In this paper, a finite-difference time domain (FDTD) calculation of the specific absorption rate (SAR) in two-dimensional human head model at GSM 920 MHz, 835MHz and 1.900GHz radiation was presented.

Abstract: The influence of radio frequency (RF) field orientation on specific absorption rate (SAR) in a human head is investigated in this paper. The amount of temperature raised in Human Head due to Mobile Phone usage with different frequency range is analyzed using a versatile electromagnetic field simulator based upon the Finite-Difference Time-Domain method (FDTD).The harmful effects of recent unbranded mobile phone is compared with the Branded Mobile Phones. This paper investigates the harmful effects of both Branded and Unbranded Mobile Phones for various frequency range and the result shows that the usage of Unbranded Mobile Phone will cause greater damage to brain cells when compared with Branded Mobile Phones. where E is the amplitude of electric field (V/m), σ is the conductivity (S/m), and ρ is the mass density of thetissue. In this paper, we present a finite-difference time- domain (FDTD) calculation of the specific absorption rate (SAR) in two-dimensional human head model at GSM 920 MHz, 835MHz and 1.900GHz radiation. The head model is exposed to an incident plane wave. The FDTD code is implemented using the EMPIRE XCcel Software. Simulation results indicate that the SAR value is minimum for GSM 835MHz when compared with other GSM frequency range.