Abstract
In this paper, a comparative analysis of electromagnetic (EM) absorption in the human head is presented using planar inverted-F antenna (PIFA) and helical antenna. Both antennas are designed for operating in global system for mobile (GSM) 900 MHz. The EM absorption is evaluated by using two parameters-the peak specific absorption rate (SAR) in the human head tissue and total absorbed power from the mobile phone user. Three different distance configurations are considered to take effects of distance of mobile phone from human head on EM absorption for both antennas. The investigation is based on the finite-difference time-domain (FDTD) method of CST Microwave Studio. The results show that the PIFA provides a significantly lower value of peak SAR in the human head than that of helical antenna. In case of PIFA, total absorbed power is more than 34 % than that of helical antenna.