Natural Energy Harvesting SoCs | Systems-on-Chip Lab

Overview

Glucose biofuel-cell powered sensor SoCs with compressive-sensing front-ends and sub-µW radios for implants.

Status: Completed • Area: Energy-Efficient TX/RX • Leads: Huan, Siva

Hybrid power solution with enzymatic biofuel cells (BFCs).
Stable and biocompatible energy harvesting that uses glutaraldehyde multipoint crosslinking to improve enzyme stability, enabling reliable BFC operation and paving the way toward long-term implantable and wearable sensors powered by natural glucose.
Noise- and temperature-optimized circuit design with a switched-resistor biasing scheme to overcome noisy and temperature-sensitive pseudo-resistors, achieving an input-referred noise of 0.31 μV_RMS and stable performance across wide temperature ranges.
Compact, integrated low-power system including a dual-supply LNIA, split-DAC SAR ADC, and nanowatt relaxation oscillator in 130nm CMOS occupying just 1.12 mm², with excellent noise- and power-efficiency factors (NEF = 1.46, PEF = 1.63) suitable for long-term monitoring in biomedical and IoT applications.

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Coming soon.

See Publications for related papers.

For collaboration inquiries or dataset requests, please contact the lab.