The possibility to generate a nondiffracting Bessel beam by means of a fast backward spatial harmonic supported by an annular metal-strip grating placed on a grounded dielectric slab is demonstrated. The focusing capabilities of the relevant leaky-wave aperture field are investigated in conjunction with the dispersive analysis of the considered structure. Full-wave simulations of a prototype are developed using a commercial code. The proposed design represents an attractive simple and low-cost solution potentially able to generate an arbitrary-order nondiffracting beam.
Bessel beam generation by means of annular leaky-wave antennas / Comite, D.; Fuscaldo, W.; Burghignoli, P.; Baccarelli, P.; Podilchak, S. K.; Galli, A.. - (2017), pp. 3863-3864. (Intervento presentato al convegno 11th European Conference on Antennas and Propagation, EUCAP 2017 tenutosi a Paris, France nel 19-24 Mar. 2017) [10.23919/EuCAP.2017.7928567].
Bessel beam generation by means of annular leaky-wave antennas
Comite, D.
;Fuscaldo, W.;Burghignoli, P.;Galli, A.
2017
Abstract
The possibility to generate a nondiffracting Bessel beam by means of a fast backward spatial harmonic supported by an annular metal-strip grating placed on a grounded dielectric slab is demonstrated. The focusing capabilities of the relevant leaky-wave aperture field are investigated in conjunction with the dispersive analysis of the considered structure. Full-wave simulations of a prototype are developed using a commercial code. The proposed design represents an attractive simple and low-cost solution potentially able to generate an arbitrary-order nondiffracting beam.| File | Dimensione | Formato | |
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Comite_Bessel-Beam-Annular_2017.pdf
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