Reconfigurable spin-decoupled conformal metasurface: 3D-printing with independent beam shaping and multi-focusing dual-channel reconfigurability techniques

This paper describes a 3D-printed conformal reconfigurable spin-decoupled metasurface and supports both independent beam shaping and dual-channel reconfigurability. The increasing complexity of metasurface structures and reconfigurable spin-decoupling among conformal structures are rarely reported due to their challenging properties. In this paper, a reconfigurable metasurface based on 3D-printing technology is proposed for reconfigurable spin-decoupled curved structures at 13.5–14.5 GHz. Curved surface spin-decoupling is realized for the first time and verified by simulation and experiment. Beam deflection(20° and 35°) and near-field focusing(100 mm and 150 mm) were achieved at different circularly polarized wave incidences. Switching the beam between the two states was achieved by incorporating the water-based metasurface. As a proof of concept, metasurfaces that have anomalous reflections in both channels were fabricated and measured. Furthermore,reconfigurable spin-decoupling was achieved using a water-based metasurface. This work extends the phase engineering approach in metasurfaces and may have a wide range of applications in communications, sensing,imaging, and camouflage.