Experimental Quasi-Microwave Whole-Body Averaged SAR Estimation Method Using Cylindrical-External Field Scanning

The aim of this study is to develop a new whole-body averaged specific absorption rate (SAR) estimation method based on the external-cylindrical field scanning technique. This technique is adopted with the goal of simplifying the dosimetry estimation of human phantoms that have different postures or sizes. An experimental scaled model system is constructed. In order to examine the validity of the proposed method for realistic human models, we discuss the pros and cons of measurements and numerical analyses based on the finite-difference time-domain (FDTD) method. We consider the anatomical European human phantoms and planewave in the 2 GHz mobile phone frequency band. The measured wholebody averaged SAR results obtained by the proposed method are compared with the results of the FDTD analyses. key words: whole-body averaged SAR, field measurement, scaled model, mobile phone frequency, plane-wave exposure system