| Autor: |
Tochou, Guillaume, Benarrouch, Robin, Gaidioz, David, Cathelin, Andreia, Frappe, Antoine, Kaiser, Andreas, Rabaey, Jan |
| Předmět: |
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| Zdroj: |
IEEE Journal of Solid-State Circuits; May2022, Vol. 57 Issue 5, p1409-1420, 12p |
| Abstrakt: |
Human body communications require energy-efficient transceivers to connect diverse devices on the human body for wellness and medical applications. This article presents a fully digital pulse-based transmitter (TX) for capacitive body-coupled communications (c-BCCs) in 28-nm Fully Depleted Silicon on Insulator (FD-SOI) CMOS. The TX is operating at 450 MHz where surface-wave (SW) propagation is the dominant mechanism of c-BCC, offering a larger bandwidth with a more stable channel. The heavily duty-cycled TX uses a 90-MHz free-running oscillator and edge combiners to generate OOK Gaussian-shaped pulses through a switched-capacitor power amplifier (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 TX consumes 17–76 $\mu \text{W}$ for flexible data rates from 0.1 to 27 Mb/s (170 down to 2.8 pJ/b) with up to 14% system efficiency under 0.5-V supply voltage. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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