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Multi-Domain Manipulations of Multi-Frequency Waves Based on Asynchronous Space-Time-Coding Digital Metasurface

  • Si Ran Wang (Co-first Author)
  • , Geng-Bo Wu* (Co-first Author)
  • , Wei Liu (Co-first Author)
  • , Shao Nan Chen
  • , Zhen Jie Qi
  • , Jun Wei Zhang
  • , Li Jie Wu
  • , Xinxin Gao
  • , Zheng Xing Wang
  • , Jun Yan Dai*
  • , Qiang Cheng*
  • , Tie Jun Cui*
  • *Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

Metasurfaces have garnered significant attention for the ability to manipulate electromagnetic (EM) waves, enabling diverse applications such as beam steering, frequency conversion, and vortex-wave generation. However, achieving complete control of the EM properties such as phase, amplitude, polarization and momentum over multiple frequencies remains a challenge. Here, an asynchronous space-time-coding digital metasurface (ASTCM) is proposed to tackle the challenge. By segmenting the metasurface into distinct partitions and letting them be modulated at different frequencies and operated with different functions, ASTCM facilitates precise and comprehensive manipulations of multi-frequency EM waves, eliminating the need for multiple oscillators and radio-frequency (RF) chains. As proof-of-concept examples, three ASTCM experiments are carried out, including multi-frequency beam steering, construction of wireless communication system, and direction-of-arrival estimation. These experiments concurrently demonstrate the capability of ASTCM in manipulating full EM properties on multifrequency waves in a simple way, showcasing its potential to revolutionize wireless communication, radar, and integrated communication and sensing systems. © 2025 Wiley-VCH GmbH.
Original languageEnglish
Article number2500184
Number of pages12
JournalLaser & Photonics Reviews
Volume19
Issue number14
Online published1 Apr 2025
DOIs
Publication statusPublished - 22 Jul 2025

Funding

This work was supported by the National Key Research and Development Program of China (2023YFB3811502, 2018YFA0701904), the National Science Foundation (NSFC) for Distinguished Young Scholars of China (62225108), the Program of Song Shan Laboratory (Included in the management of Major Science and Technology Program of Henan Province) (221100211300-02, 221100211300-03), the National Natural Science Foundation of China (62288101, 62201139, U22A2001), the Jiangsu Province Frontier Leading Technology Basic Research Project (BK20212002), the Hong Kong Research Grants Council of the Hong Kong SAR under Grant CityU (21207824), the Fundamental Research Funds for the Central Universities (2242022k60003), and the Southeast University - China Mobile Research Institute Joint Innovation Center (R202111101112JZC02).

Research Keywords

  • beam steering
  • DOA estimation
  • metasurface
  • multifrequency electromagnetic wave manipulation
  • wireless communication

RGC Funding Information

  • RGC-funded

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