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A filtering reconfigurable intelligent surface for interference-free wireless communications

Author

Listed:
  • Jing Cheng Liang

    (Southeast University
    Southeast University)

  • Lei Zhang

    (Southeast University
    Southeast University)

  • Zhangjie Luo

    (Southeast University
    Southeast University)

  • Rui Zhe Jiang

    (Southeast University
    Southeast University)

  • Zhang Wen Cheng

    (Southeast University)

  • Si Ran Wang

    (Southeast University
    Southeast University)

  • Meng Ke Sun

    (Southeast University
    Southeast University)

  • Shi Jin

    (Southeast University)

  • Qiang Cheng

    (Southeast University
    Southeast University
    Southeast University)

  • Tie Jun Cui

    (Southeast University
    Southeast University
    Southeast University)

Abstract

The powerful capability of reconfigurable intelligent surfaces (RISs) in tailoring electromagnetic waves and fields has put them under the spotlight in wireless communications. However, the current designs are criticized due to their poor frequency selectivity, which hinders their applications in real-world scenarios where the spectrum is becoming increasingly congested. Here we propose a filtering RIS to feature sharp frequency-selecting and 2-bit phase-shifting properties. It permits the signals in a narrow bandwidth to transmit but rejects the out-of-band ones; meanwhile, the phase of the transmitted signals can be digitally controlled, enabling flexible manipulations of signal propagations. A prototype is designed, fabricated, and measured, and its high quality factor and phase-shifting characteristics are validated by scattering parameters and beam-steering phenomena. Further, we conduct a wireless communication experiment to illustrate the intriguing functions of the RIS. The filtering behavior enables the RIS to perform wireless signal manipulations with anti-interference ability, thus showing big potential to advance the development of next-generation wireless communications.

Suggested Citation

  • Jing Cheng Liang & Lei Zhang & Zhangjie Luo & Rui Zhe Jiang & Zhang Wen Cheng & Si Ran Wang & Meng Ke Sun & Shi Jin & Qiang Cheng & Tie Jun Cui, 2024. "A filtering reconfigurable intelligent surface for interference-free wireless communications," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-47865-6
    DOI: 10.1038/s41467-024-47865-6
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    References listed on IDEAS

    as
    1. Si Ran Wang & Jun Yan Dai & Qun Yan Zhou & Jun Chen Ke & Qiang Cheng & Tie Jun Cui, 2023. "Manipulations of multi-frequency waves and signals via multi-partition asynchronous space-time-coding digital metasurface," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    2. Hanting Zhao & Ya Shuang & Menglin Wei & Tie Jun Cui & Philipp del Hougne & Lianlin Li, 2020. "Metasurface-assisted massive backscatter wireless communication with commodity Wi-Fi signals," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    3. Lei Zhang & Xiao Qing Chen & Shuo Liu & Qian Zhang & Jie Zhao & Jun Yan Dai & Guo Dong Bai & Xiang Wan & Qiang Cheng & Giuseppe Castaldi & Vincenzo Galdi & Tie Jun Cui, 2018. "Space-time-coding digital metasurfaces," Nature Communications, Nature, vol. 9(1), pages 1-11, December.
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