Multi-Beam Reflectarray for Future High Throughput Satellites

This paper presents a method to generate multiple spot beam coverage based on metasurfaces where the incident wavefront from a single feeder is manipulated to reflect multiple off-centred beams. The proposed method produces four steered beams to secure continuous connection for different gateways (GWs) at an operation frequency of 35 GHz. A sub-wavelength unit cell
$(\lambda/8)$
is adopted to reduce the phase quantization error and to have smooth phase distribution over the aperture.