Two-bit dual-polarized reconfigurable intelligent surface with low power consumption for 6G near-field communication  

作　　者：Xiaowei CAO Changjiang DENG Youjia YIN Yinan HAO Weidong HU Zhewei FU Zhiji DENG 

机构地区：[1]School of Integrated Circuits and Electronics,Beijing Institute of Technology,Beijing 100081,China [2]The 54th Research Institute of China Electronics Technology Group Corporation,Shijiazhuang 050081,China [3]Tangshan Research Institute,Beijing Institute of Technology,Tangshan 063099,China [4]Zhejiang Dahua Technology Co.,Ltd.,Hangzhou 310053,China [5]Zhejiang Provincial Key Laboratory of Harmonized Technology of Vision&Transmission,Hangzhou 310053,China

出　　处：《Frontiers of Information Technology & Electronic Engineering》2024年第12期1695-1707,共13页信息与电子工程前沿(英文版)

基　　金：Project supported by the National Natural Science Foundation of China(No.62071037)。

摘　　要：Near-field communication using large-scale antenna arrays is one of the hot research topics in the sixth-generation(6G)wireless communication.Reconfigurable intelligent surface(RIS)is a cost-effective method for manipulating electromagnetic waves in the near field.We propose a 2-bit dual-polarized RIS that has the merits of low cost,low power consumption,high phase accuracy,and polarization diversity.Each element consists of an aperture-coupled microstrip patch,two single-pole-fourthrow(SP4T)switches,and two groups of microstrip delay lines.Two-bit phase shift is achieved by using only one SP4T switch that controls the connection of four parallel delay branches.Dual polarization is generated by placing two orthogonal slots with two 2-bit phase shifters.A 15×15 RIS prototype operating in the 3.6 GHz band is fabricated and measured.The beam can be scanned in the±60°range,with a peak aperture efficiency of 40.1%for horizontal polarization and 38.3%for vertical polarization.What is more,the total power consumption of the RIS is merely about 100 mW,which is very attractive for massive deployment in 6G near-field communication.

关 键 词：Reconfigurable intelligent surface(RIS) Dual polarization Near-field communication 6G communication 

分 类 号：TN82[电子电信—信息与通信工程]