Sub-terahertz transmissive reconfigurable intelligent surface for integrated beam steering and self-OOK-modulation  

作　　者：Dongfang Shen Feng Lan Luyang Wang Tianyang Song Munan Yang Tianyu Hu Yueting Li Xiaolei Nie Jiayao Yang Shixiong Liang Hongxin Zeng Hui-Fang Zhang Pinaki Mazumder Ziqiang Yang Yaxin Zhang Tie Jun Cui 

机构地区：[1]Sichuan THz Communication Technology Engineering Research Center,School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu,611731,China [2]Yangtze Delta Region Institute(Huzhou),University of Electronic Science and Technology of China,Huzhou,313000,China [3]Zhangjiang Laboratory,Shanghai,201204,China [4]School of Microelectronics,Tianjin University,Tianjin,300072,China [5]Shenzhen Institute for Advanced Study,University of Electronic Science and Technology of China,Shenzhen,518100,China [6]Department of Electrical Engineering and Computer Science,University of Michigan,Ann Arbor,MI,48109,USA [7]Southeast University,Nanjing,210096,China

出　　处：《Light(Science & Applications)》2025年第1期131-141,共11页光(科学与应用)(英文版)

基　　金：financially supported by National Natural Science Foundation of China(U20A20212,61931006,62305051,62331015);National Key Research and Development Program of China(2021YFA1401004);Science and Technology on Electronic Information Control Laboratory Open Foundation;Young Elite Scientists Sponsorship Program by CAST(2022QNRC001);National Key Laboratory of Science and Technology On Space Microwave Foundation(2023-JCJQ-LB-007).

摘　　要：Boasting superior flexibility in beam manipulation and a simpler framework than traditional phased arrays,terahertz metasurface-based phased arrays show great promise for 5G-A/6G communication networks.Compared with the reflective reconfigurable intelligent surface(reflective RIS),the transmissive RIS(TRIS)offers more feasibility for transceiver multiplexing systems to meet the growing demand for high-performance beam tracking in terahertz communication and radar systems.However,the terahertz TRIS encounters greater challenges in phase shift,beam efficiency,and complex circuitry.Here,we propose a sub-terahertz TRIS based on the phase shift via Pancharatnam-Berry(PB)metasurface and self-on-off keying(OOK)modulation via Schottky diodes.The electrically reconfigurable unit cell consists of a column-wise phase resonator and a rectangular slot.An experimental retrieved equivalent lumped-element circuit model is implemented in joint field-circuit simulations and is validated by experiments.A fabricated prototype demonstrates excellent performance of TRIS with the minimum insertion loss of 2.8 dB for operational states,large bandwidth nearly covering the entire W-band for 1-bit phase shift,deep OOK amplitude modulation of 12 dB,and wide scanning range of±60°with low specular transmission.We further implement an integrated platform combining high-speed beam steering and spatial-light modulation,verifying the point-to-point signal transmissions in different directions using the TRIS platform.The proposed TRIS with high-performance and cost-effective fabrication makes it a promising solution to terahertz minimalist communication systems,radar,and satellite communication systems.

关 键 词：RECONFIGURABLE REFLECTIVE RESONATOR 

分 类 号：TN2[电子电信—物理电子学]