Reconfigurable Intelligent Surfaces: Design, Implementation, and Practical Demonstration
作者机构：School of Electronic Science and EngineeringNanjing UniversityNanjing 210023China
出 版 物：《Electromagnetic Science》 (电磁科学（英文）)
年 卷 期：2023年第1卷第2期
页 面：17-37页
学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学]
基 金：supported by the National Natural Science Foundation of China(Grant Nos.62271243,62071215,91963128,and 61731010) the National Key Research and Development Program of China(Grant No.2017YFA0700201) the Joint Fund of Ministry of Education for Equipment Pre-research(Grant No.8091B032112)
主 题：Reconfigurable intelligent surface Metasurface Wireless communication
摘 要：Metasurfaces,ultrathin two-dimensional version of metamaterials,have attracted tremendous attention due to their exotic capabilities to freely manipulate electromagnetic *** incorporating various tunable materials or elements into metasurface designs,reconfigurable metasurfaces and related metadevices with functionalities controlled by external stimuli can be realized,opening a new avenue to achieving dynamic manipulation of electromagnetic ***,based on the tunable metasurface concept,reconfigurable intelligent surfaces(RISs)have received significant attention and have been regarded as a promising emerging technology for future wireless communication due to their potential to enhance the capacity and coverage of wireless networks by smartly reconfiguring the wireless propagation ***,in this article,we first focus on technical issues of RIS system implementation by reviewing the existing research contributions,paying special attention to designs in the microwave ***,we showcase our recent attempts to practically demonstrate RIS systems in real-world applications,including deploying reflective RIS systems in indoor scenarios to enhance the wireless network coverage and utilizing intelligent omni-metasurfaces to improve both indoor and through-wall wireless communication ***,we give our own perspectives on possible future directions and existing challenges for RISs toward a truly commercial intelligent technology platform.
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