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.
Comite, D., Fuscaldo, W., Burghignoli, P., Baccarelli, P., Podilchak, S.K., Galli, A. (2017). Bessel beam generation by means of annular leaky-wave antennas. In 2017 11th European Conference on Antennas and Propagation, EUCAP 2017 (pp.3863-3864). Institute of Electrical and Electronics Engineers Inc. [10.23919/EuCAP.2017.7928567].
Bessel beam generation by means of annular leaky-wave antennas
BACCARELLI, PAOLO;
2017-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
