A COMPARATIVE-STUDY OF 2-DIMENSIONAL MULTIPLE-SCATTERING TECHNIQUES

The scattering of an electromagnetic plane wave from an arbitrary conf iguration of parallel circular cylinders is investigated using four di fferent techniques. The cylinders are made of perfectly conducting or homogeneous dielectric material. These techniques are a boundary value type of solution, an iterative scattering procedure, a hybrid approac h based on a combination of exact and method of moments solution, and a high-frequency asymptotic approximation. The analysis is given in de tail for the transverse magnetic (TM) polarization, and that for the t ransverse electric (TE) polarization is outlined. Numerical results ar e provided to show the major differences between these techniques and the validity of using circular cylinders in modeling composite two-dim ensional scatterers.