Extension of the FDTD Huygens subgridding to frequency dependent media

A wide range of wireless system developments require knowledge of the distribution of electromagnetic fields from various sources in humans. As experimental assessment is ethically unacceptable, high resolution numerical dosimetry is needed. The FiniteDifference Time-Domain method is the most appropriate due to its simplicity and versatility. Reduction in demands on computational resources can be achieved using subgridding techniques. This paper rigorously introduces frequency dependency to one of the most promising subgridding techniques, Huygens SubGridding. The validity of the Huygens Surface in lossy media as well as on the physical interface is intensively studied.