A new iterative MoM/FDTD analysis for EM scattering by a loop antenna

The health concern posed by human-body exposure to near field of wireless communication devices has been raised recently with the rapid growth of cellular-telephone use. Our previously proposed hybrid formulation (Mochizuki et al. (2003)) is applied to a one-wavelength square loop antenna with a lossy dielectric sphere to demonstrate the validity and the flexibility of our method. The computed results such as antenna input impedance, field and specific absorption rate (SAR) in the scatterer are then compared with those obtained by the conventional FDTD method. It is found that the proposed hybrid formula seems to have fast convergence and only a few iterations are needed.