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A frequency-agile retrodirective tag for large-scale sub-terahertz data backscattering

Author

Listed:
  • Atsutse Kludze

    (Princeton University)

  • Junichiro Kono

    (Rice University)

  • Daniel M. Mittleman

    (Brown University)

  • Yasaman Ghasempour

    (Princeton University)

Abstract

Backscattering is a promising power-efficient communication technique providing sustainable wireless links with a low carbon footprint. This approach is a critical enabler for dense IoT networks, which are forecast to grow to 41 billion by 2025. However, existing backscatter designs are limited to the sub-6 GHz bands or narrowband operation in the millimeter-wave regime; therefore, they fail to concurrently support many interference-free low-power users. Enabling a frequency-agile wideband backscatter design in the sub-terahertz offers a two-pronged advantage for densely deployed backscatter networks: spatial reuse enabled by directionality and frequency multiplexing enabled by the large available bandwidth. We present the first sub-THz backscatter architecture that operates above 100 GHz. Our design relies on a detailed understanding of reciprocity in leaky-wave devices and offers a realistic joint localization and communication protocol for sub-THz backscatter networks.

Suggested Citation

  • Atsutse Kludze & Junichiro Kono & Daniel M. Mittleman & Yasaman Ghasempour, 2024. "A frequency-agile retrodirective tag for large-scale sub-terahertz data backscattering," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-53035-5
    DOI: 10.1038/s41467-024-53035-5
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    References listed on IDEAS

    as
    1. Jianjun Ma & Nicholas J. Karl & Sara Bretin & Guillaume Ducournau & Daniel M. Mittleman, 2017. "Frequency-division multiplexer and demultiplexer for terahertz wireless links," Nature Communications, Nature, vol. 8(1), pages 1-8, December.
    2. Josep M. Jornet & Edward W. Knightly & Daniel M. Mittleman, 2023. "Wireless communications sensing and security above 100 GHz," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
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