A Dual-polarized Stacked Reflectarray Antenna with Changing Beam-direction

Recent studies have proposed a multi-beam system that requires fewer mirror surfaces. This is made possible by sharing V and H polarized waves, which is one of the unique properties of a reflectarray antenna, in a single mirror surface. In this study, we used five line elements as in previous studies; however, we examined a reflectarray that radiates beams in different directions depending on V and H polarization using three line elements. It was found that separating the elements into two layers allows independent phase control and, as a result, beams can be radiated in different directions for each polarization.