The far-zone scattering calculation of frequency-dependent materials objects using the TLM method

The transmission-line matrix method is used for the calculation of the far scattered field and radar cross section of frequency dependent materials objects. Three different materials have been considered, namely, Debye, plasma, and Lorentz for which the electric susceptibility is complex. The proposed model is based on the computation of the equivalent currents and on a time domain near-to-far-field transformation technique. To illustrate this study, the far-zone scattering results for different spheres using the three materials indicated above are presented.