title: Broadband computation of the scattering coefficients of infinite arbitrary cylinders.
abstract: We employ a time-domain method to compute the near field on a contour enclosing infinitely long cylinders of arbitrary cross section and constitution. We therefore recover the cylindrical Hankel coefficients of the expansion of the field outside the circumscribed circle of the structure. The recovered coefficients enable the wideband analysis of complex systems, e.g., the determination of the radar cross section becomes straightforward. The prescription for constructing such a numerical tool is provided in great detail. The method is validated by computing the scattering coefficients for a homogeneous circular cylinder illuminated by a plane wave, a problem for which an analytical solution exists. Finally, some radiation properties of an optical antenna are examined by employing the proposed technique.
authors.affiliation: Laboratoire Charles Coulomb, University of Montpellier 2, 34071 Montpellier, France. cedric@ugr.es
authors.forename: Cédric
authors.initials: C
authors.lastname: Blanchard
authors.forename: Brahim
authors.initials: B
authors.lastname: Guizal
authors.forename: Didier
authors.initials: D
authors.lastname: Felbacq
mesh_terms: D003198:Computer Simulation; D008962:Models, Theoretical; D012542:Scattering, Radiation