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VO2 memristor-based frequency converter with in-situ synthesize and mix for wireless internet-of-things

Author

Listed:
  • Chang Liu

    (Peking University)

  • Pek Jun Tiw

    (Peking University)

  • Teng Zhang

    (Peking University)

  • Yanghao Wang

    (Peking University)

  • Lei Cai

    (Peking University)

  • Rui Yuan

    (Peking University)

  • Zelun Pan

    (Peking University)

  • Wenshuo Yue

    (Peking University)

  • Yaoyu Tao

    (Peking University
    Peking University)

  • Yuchao Yang

    (Peking University
    Peking University
    Peking University
    Chinese Institute for Brain Research (CIBR), Beijing)

Abstract

Wireless internet-of-things (WIoT) with data acquisition sensors are evolving rapidly and the demand for transmission efficiency is growing rapidly. Frequency converter that synthesizes signals at different frequencies and mixes them with sensor datastreams is a key component for efficient wireless transmission. However, existing frequency converters employ separate synthesize and mix circuits with complex digital and analog circuits using complementary metal-oxide semiconductor (CMOS) devices, naturally incurring excessive latency and energy consumption. Here we report a highly uniform and calibratable VO2 memristor oscillator, based on which we build memristor-based frequency converter using 8 $$\times$$ × 8 VO2 array that can realize in-situ frequency synthesize and mix with help of compact periphery circuits. We investigate the self-oscillation based on negative differential resistance of VO2 memristors and the programmability with different driving currents and calibration resistances, demonstrating capabilities of such frequency converter for in-situ frequency synthesize and mix for 2 ~ 8 channels with frequencies up to 48 kHz for low frequency transmission link. When transmitting classical sensor data (acoustic, vision and spatial) in an end-to-end WIoT experimental setup, our VO2-based memristive frequency converter presents up to 1.45× ~ 1.94× power enhancement with only 0.02 ~ 0.21 dB performance degradations compared with conventional CMOS-based frequency converter. This work highlights the potential in solving frequency converter’s speed and energy efficiency problems in WIoT using high crystalline quality epitaxially grown VO2 and calibratable VO2-based oscillator array, revealing a promising direction for next-generation WIoT system design.

Suggested Citation

  • Chang Liu & Pek Jun Tiw & Teng Zhang & Yanghao Wang & Lei Cai & Rui Yuan & Zelun Pan & Wenshuo Yue & Yaoyu Tao & Yuchao Yang, 2024. "VO2 memristor-based frequency converter with in-situ synthesize and mix for wireless internet-of-things," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-45923-7
    DOI: 10.1038/s41467-024-45923-7
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    References listed on IDEAS

    as
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