Summary
International Symposium on Antennas and Propagation
2012
Session Number:POS1
Session:
Number:POS1-49
Construction of a Realistic Calculation Model of a Flip Phone for SAR Evaluations
Kensuke Tanaka, Akihiro Tateno, Kazuyuki Saito, Tomoaki Nagaoka, Masaharu Takahashi, Koichi Ito,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
Recently, influences of electromagnetic wave to human bodies needs to be estimated along with the popularization of electromagnetic devices. For example, the penetration of cellular phones continues to grow. Therefore, to estimate the influence of electromagnetic wave, we have calculated SAR distributions in the human bodies in case they use the electromagnetic devices close to their bodies. In order to calculate the SAR distribution in the human bodies, we use mostly numerical calculation. In the numerical calculation, we need two calculation models, the human body model and the device model. The human body model is already developed and it is high resolution. We collected the data of human bodies by use of MRI to construct the model. Therefore the human body model has the anatomically characteristic. In our previous studies, several types of electromagnetic sources, such as a half-wavelength dipole antenna, a PIFA with a metallic case, and some other antennas, are employed. However, these device models we have used were simple models. There still remains a necessity to evaluate the SAR due to more realistic device models. In this study, we have constructed a high resolution model of a flip phone, which has some antennas. In those antennas, the dual band antenna for 900 MHz and 2 GHz radiates electromagnetic wave the most intensively in comparison with other antennas. Therefore, we analyzed the antenna for 900 MHz and 2 GHz. We previously calculated the SAR distributions in the human bodies with PIFA. Therefore to compare the high resolution model and the simple model, we made the comparison of the SAR distributions in a simple phantom model between flip phone model and PIFA by use of the FDTD method.