Highly-Integrated Folded Reflectarray for Generation of Bessel Beam Carrying Orbital Angular Momentum

摘要

Folded reflectarray achieves high gain with low profiles and low aperture blockage, but also faces the challenges including integration with active circuits especially at millimeter-waves. To alleviate the integration issue, the substrate integrated waveguide is used as feeding source of folded reflectarray to replace traditional horn antenna. This paper presents an inherently integrated folded reflectarray fed by coaxial cable, achieving high-gain beam and first-order Bessel beam carrying orbital angular momentum (OAM). The simulation results demonstrate that the proposed folded reflectarrays successfully obtain Bessel beam inherently carrying OAM propagating non-diffractively.