Fully Metallic Reflectarray Unit Cell for Independent Control of Dual Circular Polarization

In recent decades, reflectarrays have established themselves as an innovative class of high-gain antennas, combining various advantageous features of reflectors and arrays, while also offering an alternative design characterized by a reduced profile and lower weight. These antennas stand out due to their low mass, compact profile, and ease of manufacturing, attributes that make them particularly suitable for space applications, alongside their high efficiency and gain capabilities. A key advantage of reflectarrays over traditional reflectors lies in their ability to precisely control the phase of each element within the aperture. This enables the optimization of scanning performance without incurring additional costs or the distribution losses associated with the feeding network of large arrays.