Spectral Projection Model Applied to Electromagnetic Scattering from Dielectric Cylinders with Arbitrary Cross-Sections

Abstract

In 2019, a new technique named the Spectral Projection Model (SPM) was formulated by the Remote Sensing Group at the University of Massachusetts Dartmouth, as an alternate approach to Method of Moments to estimate the fields due to the scattering of electromagnetic waves from arbitrary cylindrical conducting surfaces [1]. SPM evolved from the decomposition of the Green's function in the electric field integral equation (EFIE) for describing the boundary conditions. The decomposition of the Green's function is implemented using the addition theorem for Hankel and Bessel functions. In this paper, the technique is extended to scattering from dielectric cylinders with arbitrary cross-sections. The far field patterns are calculated and compared with results using the modal expansion technique. Simulations are performed for cylinders of arbitrary radii with both TM and TE polarization and compared with the results from the modal expansion technique to study the method's accuracy.