In this paper the focusing capability of a radiating aperture implementing an inward traveling wave current distribution directed along a fixed unit vector is investigated. In particular, it is shown that such a current distribution generates a field profile with its transverse component (with respect to the normal of the radiating aperture) taking the form of a zero-th order Bessel profile. As a practical implementation of the theoretical analysis, a circular-polarized (CP) Bessel beam launcher, made by a radial parallel-plate waveguide loaded with several slot pairs and arranged on a spiral pattern, is designed and optimized. The designed launcher performance agrees with the theoretical model and exhibits an excellent polarization purity.
Titolo: | Analysis and design of CP Bessel beam launchers | |
Autori interni: | ||
Data di pubblicazione: | 2016 | |
Handle: | http://hdl.handle.net/20.500.11769/373422 | |
ISBN: | 9788890701863 | |
Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |