Tunable, Asynchronous, and Nanopower Baseband Receiver for Charging and Wake-up of IoT Devices
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Accepted manuscript
Type
ArticleKAUST Department
Computer, Electrical and Mathematical Science and Engineering (CEMSE) DivisionDepartment 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
2021-07-06Online Publication Date
2021Print Publication Date
2022-02-15Permanent link to this record
http://hdl.handle.net/10754/670089
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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.2021.3094881Publisher
IEEEJournal
IEEE Internet of Things JournalAdditional 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