EM Exposure Study on an Inhomogeneous Human Model considering Different Hand Positions

Author: Tamar Nozadze
Keywords: SAR; FDTD; woman model; mobile phone; child model;EM field exposure;
Annotation:

Due to a tremendous increase of Mobile phones and other handsets and their frequently use in everyday life, it is very important to study their EM influence on humans, since the excitation source is located very close to the sensitive tissues. It is important to obtain some general conclusions about the nature of exposure process in order to elaborate some safety recommendations and standards. It is necessary to reduce the radiation influence to human from phone antennas. The main aim and the novelty of the proposed research is to study Mobile phone EM exposure thermal influence for the inhomogeneous woman and child models in case of different hand (finger) positions, holding the mobile phone, at 900 MHz, 1900 MHz and 3700 MHz frequencies. The motivation of this work is the necessity to consider influence of the hand, its position and position of the handset upon the near field for proper understanding of the exposure nature. Numerical simulations are carried out using finite-difference time domain (FDTD) method to estimate the specific absorption rate (SAR) and temperature rise caused by absorption of EM field energy in the human tissues.