Circular Array Synthesis for Cylindrical Beam-Scanning Metasurfaces

In the complex next-generation wireless communications scenario (i.e. 5G/6G and beyond), the radiating system should be designed to provide higher data rates, greater coverage, and improved reliability, while also meeting the constraints of size, cost, and environmental conditions. In this challenging framework, there is a growing interest in reconfigurable beam-shaping and beam-scanning antennas. However, traditional solutions based on phased arrays, although providing good radiation features, are characterized by a significant complexity and high cost. Hence, recently, new solutions based on reflective or transmitting metasurfaces have been proposed to create feasible, economical, agile and flexible beam-scanning and/or beam-shaping antennas [1]–[4].