Diffraction of Electromagnetic Waves by a Dielectric Wedge, Part III: Correction by Neumann-Expanded Source

쇄기형 유전체에 의한 전자파의 회절, III부: Neumann 전개된 전원에 의한 수정

This paper, the last part of these three companion papers treated the electromagnetic diffraction by a dielectric wedge, presents the correction to the physical optics approcomation by the sheet currents of the Neumann expansion. Those expansion coefficients obtained by solving dual series equation amenable to simple numerical calculation may provide the asymprotically corrected solution. The validity of this result, satisfying both the edge condition near the tip of the dielectric wedge and the boundary condition along dielectric interfaces, is assured by approach of the corrected diffraction pattern to that of a perfectly conducting wedge for large permittivity of dielectric wedge.