Electromagnetic characteristics of body area communication using electromagnetic resonance coupling

In this study, we employed a realistic human arm model based on the MRI data, provided by NICT, for the investigation of the transmission characteristics S21, electromagnetic field distributions and specific absorption rate (SAR) in body area communication using electromagnetic resonance coupling. As a result, it is found that the transmission characteristics obtained from the models employing the realistic arm and the simplified cylindrical arm agreed well with each other. Furthermore, it is also found that the SAR of the body was less than a three-hundredth compared with the safety limit of 2 W/kg.