Frequency‐Multiplexed Holographic‐Reflective Coding Metasurface for Independent Controls of Surface Wave and Spatially Propagating Wave

Abstract

AbstractIn recent years, frequency‐multiplexed metasurfaces have received extensive attention due to the increasing demands for device integration and communication capacity. However, most of previously reported works can only manipulate either surface waves (SW) or spatially propagating waves (SPW). In this paper, a frequency‐multiplexed holographic‐reflective‐integration (HRI) coding metasurface is proposed, which can independently manipulate SW and SPW at different frequencies with a shared aperture. To be specific, the metasurface can act as a holographic metasurface to manipulate SW at low frequency and a reflective metasurface to manipulate SPW at high frequency. The performance of the frequency‐multiplexed HRI coding metasurface is validated by matched simulation and measurement results of versatile wavefront and polarization manipulations. Due to the advantages of low profile, high aperture usage, and multifunction integration, the proposed frequency‐multiplexed HRI coding metasurface is promising to be applied in wireless communications, radar detections, and holographic technology.