Design and Operation of a Radiating Lens Fed by a Goubau Beam-Waveguide

摘要

The Goubau electromagnetic beam waveguide has given rise to the interesting problem of coupling energy between the guiding system and free space in an efficient manner. In this report, a coupler consisting of dielectric lenses is considered. The Goubau electromagnetic beam waveguide is used as a feed line. The coupler modifies the field distribution so as to illuminate a large radiating lens. The method of approach to the design of such a coupler is that of geometrical optics. This approach is justified as a first approximation since the dimensions of the elements in the guiding section as well as those in the coupling system are very large compared to a wavelength. (Author)