Metasurfaced Reverberation Chamber

• Main Authors: Hengyi Sun, Zhuo Li, Changqing Gu, Qian Xu, Xinlei Chen, Yunhe Sun, Shengchen Lu, Ferran Martin
• Format: Article
• Language: English
• Published: Nature Publishing Group 2018-01-01
• Series: Scientific Reports
• Online Access: https://doi.org/10.1038/s41598-018-20066-0

Abstract The concept of metasurfaced reverberation chamber (RC) is introduced in this paper. It is shown that by coating the chamber wall with a rotating 1-bit random coding metasurface, it is possible to enlarge the test zone of the RC while maintaining the field uniformity as good as that in a traditional RC with mechanical stirrers. A 1-bit random coding diffusion metasurface is designed to obtain all-direction backscattering under normal incidence. Three specific cases are studied for comparisons, including a (traditional) mechanical stirrer RC, a mechanical stirrer RC with a fixed diffusion metasurface, and a RC with a rotating diffusion metasurface. Simulation results show that the compact rotating diffusion metasurface can act as a stirrer with good stirring efficiency. By using such rotating diffusion metasurface, the test region of the RC can be greatly extended.