On smoothening the singular field developed in the vicinity of metallic edges

Article type: Research Article

Authors: Valagiannopoulos, Constantine A.^a

Affiliations: [a] National Technical University of Athens, Ekavis 81 GR-11146 Galatsi, Athens, Greece. Tel.: (+30) 6937453172; E-mail: cav@mail.ntua.gr

Abstract: Metallic wedges can be considered as parts of corner reflectors, open-ended waveguides, transmission lines and other devices with polygonal shape existing in an electromagnetics laboratory. The fields developed in the vicinity of these conducting edges possess substantial magnitudes which can affect negatively the conducted experiments and the measurement procedures. In this work, a cylindrical cap of lossy material is used to weaken the damaging radiation of the edge. The influence of the cylinder's radius, the material's permittivity and conductivity and the angular extent of the wedge on the interfering field is illustrated through various numerical examples.

Keywords: Electrical protection, metallic corner, dielectric cap, line source scattering

DOI: 10.3233/JAE-2009-1048

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 31, no. 2, pp. 67-77, 2009