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

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

doi:10.1038/s41377-024-01690-0

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

Original Articles

- Sub-terahertz transmissive reconfigurable intelligent surface for integrated beam steering and self-OOK-modulation
- Light: Science & Applications Vol. 14, Issue 1, Pages: 131-141(2025)
- Affiliations：
  
  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
- Author bio：
  
  Feng Lan (lanfeng@uestc.edu.cn)
  Yaxin Zhang (zhangyaxin@uestc.edu.cn)
  Tie Jun Cui (tjcui@seu.edu.cn)
- Funds：
- DOI：10.1038/s41377-024-01690-0
  CLC：
- Published：31 January 2025，
  
  Published Online：01 January 2025，
  
  Received：27 May 2024，
  
  Revised：21 October 2024，
  
  Accepted：2024-11-12
- Accepted：
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Shen, D. F. et al. Sub-terahertz transmissive reconfigurable intelligent surface for integrated beam steering and self-OOK-modulation. Light: Science & Applications, 14, 131-141 (2025).
DOI：

Shen, D. F. et al. Sub-terahertz transmissive reconfigurable intelligent surface for integrated beam steering and self-OOK-modulation. Light: Science & Applications, 14, 131-141 (2025). DOI： 10.1038/s41377-024-01690-0.

摘要

Abstract

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

Keywords

references

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