A Circularly Polarized Transmit-Reflect-Array Antenna Based on Transmission-Reflection-Integrated Metasurface

In this paper, we proposed a circularly polarized (CP) transmit-reflect-array antenna based on transmission-reflection-integrated metasurface. The metasurface can not only realize arbitrary amplitude allocation of transmitted and reflected $\mathbf{C P}$ waves but also independently manipulate their phase responses. By adopting the transmission and reflection amplitude to be equally allocated and full-space phase control, the transmit-reflect-array antenna can achieve high-gain beams in both the reflection and transmission space. The simulated results show that the designed transmit-reflect-array antenna can achieve good performance, which may find promising applications in satellite communication with bidirectional communication scenarios.