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    Tunable, Asynchronous, and Nanopower Baseband Receiver for Charging and Wake-up of IoT Devices

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    Final_Tunable, Asynchronous, and Nanopower Baseband Receiver for Charging and Wake-up of IoT Devices.pdf
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    2.511Mb
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    PDF
    Description:
    Accepted manuscript
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    Type
    Article
    Authors
    Benbuk, Ahmed Abed
    Kouzayha, Nour Hicham cc
    Costantine, Joseph
    Dawy, Zaher
    KAUST Department
    Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division
    Department of Electrical and Computer Engineering, American University of Beirut, Beirut 1107 2020, Lebanon. also with King Abdullah University of Science and Technology (KAUST), Saudi Arabia.
    Electrical and Computer Engineering Program
    Date
    2021-07-06
    Online Publication Date
    2021
    Print Publication Date
    2022-02-15
    Permanent link to this record
    http://hdl.handle.net/10754/670089
    
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    Abstract
    This paper proposes a novel ultra-low power, tunable, and asynchronous baseband architecture for joint radio frequency (RF) wake-up and charging receivers. The designed system switches between the wake-up and charging operations based on the type of the received RF signal. To our knowledge, the proposed system is the first of a kind that introduces multiple power states to reduce the energy consumption by sequentially activating minimal components required for RF wake-up or charging. The fabricated prototype, using off-the-shelf components, features a sensitivity of -40 dBm, a bit rate of 500 bps, and a current consumption of 225 nA at a bias voltage of 2.6 V in the listening state. Current consumption is estimated at 3.225 μA and 13.725 μA while processing the preamble and bit sequence, respectively. The address detector is powered OFF during charging to reduce the system’s current consumption to 150 nA. Our experimental results show that shutting down the address detector during charging reduces charging time and allows charging from received power levels that are as low as -6 dBm. We demonstrate that, operating the detector with multiple power modes reduces its current consumption and enhances its noise immunity when compared to conventional address detectors with two power modes of operation.
    Citation
    Benbuk, A. A., Kouzayha, N., Costantine, J., & Dawy, Z. (2021). Tunable, Asynchronous, and Nanopower Baseband Receiver for Charging and Wake-up of IoT Devices. IEEE Internet of Things Journal, 1–1. doi:10.1109/jiot.2021.3094881
    Publisher
    IEEE
    Journal
    IEEE Internet of Things Journal
    DOI
    10.1109/JIOT.2021.3094881
    Additional Links
    https://ieeexplore.ieee.org/document/9475468/
    https://ieeexplore.ieee.org/document/9475468/
    https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9475468
    ae974a485f413a2113503eed53cd6c53
    10.1109/JIOT.2021.3094881
    Scopus Count
    Collections
    Articles; Electrical and Computer Engineering Program; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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