Title :
SAR determination and influence of the human head in the radiation of a mobile antenna for two different frequencies
Author :
Pinho, Pedro ; Lopes, Amélia ; Leite, João ; Casaleiro, João
Abstract :
The big proliferation of mobile communication systems has caused an increased concern about the interaction between the human body and the antennas of mobile handsets. In order to study the problem, a multiband antenna was designed, fabricated and measured to operate over two frequency sub bands 900 and 1800 MHz. After that, we simulated the same antenna, but now, in the presence of a human head model to analyze the head´s influence. First, the influence of the human head on the radiation efficiency of the antenna has been investigated as a function of the distance between the head and the antenna and with the inclination of the antenna. Furthermore, the relative amount of the electromagnetic power absorbed in the head has been obtained.
Keywords :
antenna radiation patterns; bio-optics; finite difference time-domain analysis; mobile communication; mobile handsets; SAR; antenna radiation efficiency; distance 1.6 mm; distance 4.4 mm; distance 9.6 mm; frequency 1800 MHz; frequency 900 MHz; head absorbed electromagnetic power; human head effects; mobile antenna radiation; mobile communication systems; multiband antenna; specific absorption rate; Antenna radiation patterns; Biological system modeling; Cellular phones; Electromagnetic radiation; Finite difference methods; Humans; Mobile antennas; Mobile handsets; Radio frequency; Telephone sets;
Conference_Titel :
Electromagnetics in Advanced Applications, 2009. ICEAA '09. International Conference on
Conference_Location :
Torino
Print_ISBN :
978-1-4244-3385-8
Electronic_ISBN :
978-1-4244-3386-5
DOI :
10.1109/ICEAA.2009.5297401
