Accurate Modeling of Body Area Network Channels Using Surface-Based Method of Moments

An accurate method for modeling body shadowing in body area networks (BANs) is presented, based on an efficient surface-based method-of-moments (MOM) solution. The method allows the fields radiated by a transmit line current with arbitrary orientation (polarization) in the presence of a lossy dielectric cylinder of arbitrary cross section to be computed with high accuracy. The fields due to a point source are then found using Fourier transform techniques. The utility of the method for BAN modeling is demonstrated by comparing with BAN measurements on a human subject performed in a compact chamber and in an open field.