TC34 SC2 WG-1 - Certification (SAR) of Portable Wireless Devices Working Group

Working Group 1 develops the IEEE Std. 1528.1 for the numerical evaluation of the specific absorption rate for wireless devices operating in the frequency range between 30MHz and 6GHz using the FDTD and FIT algorithms. The objectives of IEEE Std. 1528.1 are 1) to define quality criteria for particular implementations of the numerical algorithm and 2) to give guidelines for the evaluation of the numerical uncertainty of the simulation results. Novel methods for the validation of the correct implementation of a numerical code and to assess its accuracy have been developed. These include, e.g., the evaluation of the numerical propagation constants in different dielectrics, of boundary conditions at planar and stair-cased material interfaces and of spurious reflection at absorbing boundary conditions. Post processing routines, such as the SAR averaging according to IEEE C95.3-2002, are validated with the help of particular benchmark geometries or reference results from alternative numerical methods. For the evaluation of the numerical uncertainty, different methods are proposed which permit the assessment of the impact of numerical contributions, e.g., the grid resolution, the power budget, etc. and the accuracy of the modeling, such as correct representation of the electrically relevant parts, dielectric parameters, etc.