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A Sub-100 µW 0.1-to-27 Mb/s Pulse-based Digital Transmitter for the Human Intranet in 28 nm FD-SOI CMOS

Abstract : Human body communications require energyefficient transceivers to connect diverse devices on the human body for wellness and medical applications. This paper presents a fully digital pulse-based transmitter (TX) for capacitive bodycoupled communications (c-BCC) in 28 nm FD-SOI CMOS. The transmitter is operating at 450 MHz where surface wave (SW) propagation is the dominant mechanism of capacitive body coupled communication (c-BCC), offering a larger bandwidth with a more stable channel. The heavily duty-cycled transmitter uses a 90 MHz free-running oscillator and edge combiners to generate OOK Gaussian-shaped pulses through a switchedcapacitor PA. Wide range forward body-biasing (FBB), specific to FD-SOI technology, allows frequency tuning and adaptive efficiency optimization as a function of data rate. The proposed transmitter consumes 17 to 76 µW for flexible data rates from 0.1 to 27 Mb/s (170 pJ/b down to 2.8 pJ/b) with up to 14 % system efficiency under 0.5 V supply voltage.
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https://hal.archives-ouvertes.fr/hal-03514856
Contributor : Antoine Frappé Connect in order to contact the contributor
Submitted on : Thursday, January 6, 2022 - 2:35:40 PM
Last modification on : Tuesday, April 26, 2022 - 4:06:04 PM
Long-term archiving on: : Thursday, April 7, 2022 - 7:27:10 PM

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Guillaume Tochou, Robin Benarrouch, David Gaidioz, Andreia Cathelin, Antoine Frappé, et al.. A Sub-100 µW 0.1-to-27 Mb/s Pulse-based Digital Transmitter for the Human Intranet in 28 nm FD-SOI CMOS. IEEE Journal of Solid-State Circuits, Institute of Electrical and Electronics Engineers, In press, ⟨10.1109/JSSC.2022.3140905⟩. ⟨hal-03514856⟩

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