An Implantable Body Channel Communication System with 3.7 pJ/b Reception and 34 pJ/b Transmission Efficiencies

We present an energy-efficient reception and transmission scheme based on the exploitation of the conductive properties of the body for wireless neural interface applications. High efficiencies were achieved with 1) a three-level clock-embedded direct digital signaling scheme in the transmitter (TX)...

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Bibliographic Details
Published in:IEEE solid-state circuits letters 2020-01, Vol.3, p.1-1
Main Authors: Yuk, Beomjin, Kim, Byeongseol, Park, Sanggeon, Huh, Yeowool, Bae, Joonsung
Format: Article
Language:English
Subjects:
Body channel communication (BCC)
Clocks
closed-loop neural interface
Communications systems
Data mining
Data recovery
Electrodes
implantable communication
Latches
low-energy communication
neural implant
Transistors
Transmission efficiency
Wireless communication
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Summary:We present an energy-efficient reception and transmission scheme based on the exploitation of the conductive properties of the body for wireless neural interface applications. High efficiencies were achieved with 1) a three-level clock-embedded direct digital signaling scheme in the transmitter (TX) and 2) with a squaring clock extraction enabling data recovery scheme using a clocked-comparator in the receiver (RX). Additionally, the output voltage of the TX was boosted to secure the link budget of the RX. As a result, the RX and TX consumed 62 μW and 566 μW, respectively, for a rated output power of 185 μW and achieved a maximum data rate of 16.7 Mb/s. These operational characteristics corresponded to the energy consumptions of 3.7 pJ per received bit and 34 pJ per transmitted bit, demonstrating a promising potential for use in implanted devices.
ISSN:2573-9603
2573-9603
DOI:10.1109/LSSC.2020.2978852