Combined complex-source beam and spherical-multipole analysis for the electromagnetic probing of conical structures

Publication date: Available online 12 August 2016 Source:Comptes Rendus Physique Author(s): Ludger Klinkenbusch, Hendrik Brüns The paper addresses the combination of the spherical-multipole analysis in sphero-conal coordinates with a uniform complex-source beam (CSB) in order to analyze the scattering of a localized electromagnetic plane wave by any desired part of a perfectly conducting elliptic cone. The concept of uniform CSB is introduced and rigorously applied to the diffraction by a semi-infinite elliptic cone. The analysis takes into account the fact that the incident CSB does not satisfy the radiation condition. A new modal form of the Green's function for the elliptic cone is derived based on the principle that there is no energy loss to infinity. The numerical evaluation includes the scattered far fields of a CSB incident on the corner of a plane angular sector with different opening angles.

Source: Comptes Rendus Physique - August 11, 2016 Category: Physics Source Type: research