A batteryless 19 μw MICS/ISM-band energy harvesting body sensor node SoC for ExG applications

Yanqing Zhang, Fan Zhang, Yousef Shakhsheer, Jason D. Silver, Alicia Klinefelter, Manohar Nagaraju, James Boley, Jagdish Pandey, Aatmesh Shrivastava, Eric J. Carlson, Austin Wood, Benton H. Calhoun, Brian P. Otis

Research output: Contribution to journalArticlepeer-review

232 Scopus citations

Abstract

This paper presents an ultra-low power batteryless energy harvesting body sensor node (BSN) SoC fabricated in a commercial 130 nm CMOS technology capable of acquiring, processing, and transmitting electrocardiogram (ECG), electromyogram (EMG), and electroencephalogram (EEG) data. This SoC utilizes recent advances in energy harvesting, dynamic power management, low voltage boost circuits, bio-signal front-ends, subthreshold processing, and RF transmitter circuit topologies. The SoC is designed so the integration and interaction of circuit blocks accomplish an integrated, flexible, and reconfigurable wireless BSN SoC capable of autonomous power management and operation from harvested power, thus prolonging the node lifetime indefinitely. The chip performs ECG heart rate extraction and atrial fibrillation detection while only consuming 19 μW, running solely on harvested energy. This chip is the first wireless BSN powered solely from a thermoelectric harvester and/or RF power and has lower power, lower minimum supply voltage (30 mV), and more complete system integration than previously reported wireless BSN SoCs.

Original languageEnglish (US)
Article number6399579
Pages (from-to)199-213
Number of pages15
JournalIEEE Journal of Solid-State Circuits
Volume48
Issue number1
DOIs
StatePublished - Jan 15 2013

Keywords

  • Body-area sensors
  • energy harvesting
  • subthreshold
  • ultra-low power

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