Surface fields on the source-excited dielectric wedge

Surface Fields on the Source-Excited Dielectric Wedge

Approximate surface fields due to a plane-wave solution and a local-mode solution are compared. The plane-wave solution, which is new, is shown to agree well with experiment. The local-mode solution, which often has been applied to tapered waveguides and antennas, fails near the cutoffs of the surface waves.

Efficient Computation of Surface Fields Excited on a Dielectric-Coated Circular Cylinder

An efficient method to evaluate the surface fields excited on an electrically large dielectric-coated circular cylinder is presented. The efficiency of the method results from the circumferentially propagating representation of the Green’s function as well as its efficient numerical evaluation along a steepest descent path. The circumferentially propagating series representation of the appropri...

E-Polarized Diffraction by Dielectric Wedge

Geometrical optics (GO), the most widely used tool in analysis of high frequency electromagnetic problems, provides the first term of an asymptotic series solution to the Maxwell's equations [1]. It is implemented completely by employing the ordinary ray-tracing technique. To include the second asymptotic term systematically, Keller [2] suggested a generalization of the Fermat's principle on di...

Casimir Effect for a Dielectric Wedge

The Casimir effect is considered for a wedge with opening angle α, with perfectly conducting walls, when the interior region is filled with an isotropic and nondispersive medium with permittivity ǫ and permeability μ. The electromagnetic energy-momentum tensor in the bulk is calculated, together with the surface stress on the walls. A discussion is given on the possibilities for measuring the i...

Spectroscopic investigations of a dielectric-surface-discharge plasma source