Sliding Metasurface for Independent and Dynamic Control of Reflected and Transmitted Waves

ABSTRACT

Full‐space metasurfaces, capable of simultaneously controlling transmitted and reflected waves, hold great potential for enhancing space utilization and constructing intelligent electromagnetic (EM) environments. However, existing reconfigurable full‐space metasurfaces are typically implemented through numerous active devices, such as PIN diodes, which hinder their large‐scale application due to high cost and structural complexity. In this paper, a reconfigurable full‐space metasurface based on sliding architecture is proposed. It consists of three passive metasurface layers. The first and third layers are transmissive metasurfaces, while the middle layer can selectively transmit ‐polarized waves and reflect ‐polarized waves. By fixing the middle layer and moving the top and bottom layers, simultaneous and independent two‐dimensional (2D) beam control of reflected and transmitted waves can be achieved. Full‐wave simulations and experimental measurements demonstrate excellent agreement, with both channels achieving a beam scanning range of . The proposed scheme provides a novel, passive approach to reconfigurable full‐space metasurfaces, featuring a simple structure, low cost, and mechanical beam‐steering capability, which has significant potential in wireless communication and multi‐beam systems.