Dual Polarised Metasurface Antenna with Multi-Beam in Ka-Band

In the ever-changing landscape of modern communications, MultiBeam (MB) antennas stand out as a rev-olutionary technology that expands beam coverage, and serves multiple users simultaneously. As the de-mand for connectivity continues to escalate, contemporary communication networks necessitate antennas equipped with MultiBeam capabilities, featuring low-profile designs, cost-effectiveness, polarization con-trol, and high efficiency. Addressing these evolving requirements, MTS antennas have emerged as a ground-breaking innovation. They enable the manipulation of radiating aperture fields through a meticulously engi-neered metallic texture on a thin grounded dielectric slab, creating modulated impedance boundary conditions (IBCs). The precise adjustment of these IBCs allows for accurate control of the radiation pattern shape and polarization, as detailed in (M. Faenzi, G. Minatti, D. Gonzalez-Ovejero, F. Caminita, E. Martini, C. Della Giovampaola, and S. Maci, “Metasurface antennas: New models, applications and realizations,” Sci-entific Reports, vol. 9,07 2019). While numerous studies have explored MTS antennas, only a handful have ventured into the realm of MB-MTS antennas. The work presented in (D. Gonza'lez-Ovejero, G. Minatti, G. Chattopadhyay, and S. Maci, “Multi-beam by metasurface antennas,” IEEE TAP, 2017.) investigates MB-MTS antennas utilizing both a single source and multiple sources sharing a common aperture. Further-more, (M. Bodehou, K. A. Khalifeh, S. N. Jha, and C. Craeye, “Direct numerical inversion methods for the design of surface wave-based metasurface antennas: Fundamentals, realizations, and perspectives,” IEEE Antennas and Propagation Magazine, 2022.) provides measurements for the single-source shared aperture configuration, showcasing designs with single circular polarization. Recent research has introduced a du-plexing technique, as discussed in both (M. Faenzi, N. Graziuso, E. Martini, and S. Maci, “Design methods for dual polarized metasurf...