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.
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|Titolo:||Analysis and design of CP Bessel beam launchers|
|Citazione:||PAVONE, S.C., ETTORRE, M., CASALETTI, M., & ALBANI, M. (2016). Analysis and design of CP Bessel beam launchers. In 2016 10th European Conference on Antennas and Propagation, EuCAP 2016 (pp.1-4). Institute of Electrical and Electronics Engineers Inc..|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|