Journal
IEEE JOURNAL OF SOLID-STATE CIRCUITS
Volume 47, Issue 1, Pages 335-344Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSSC.2011.2170633
Keywords
Contact lens; glucose sensor; heterogeneous integration; low power; noninvasive; potentiostat; wireless health monitoring
Categories
Funding
- National Science Foundation through the EFRI
- Directorate For Engineering
- Emerging Frontiers & Multidisciplinary Activities [937710] Funding Source: National Science Foundation
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This paper presents a noninvasive wireless sensor platform for continuous health monitoring. The sensor system integrates a loop antenna, wireless sensor interface chip, and glucose sensor on a polymer substrate. The IC consists of power management, readout circuitry, wireless communication interface, LED driver, and energy storage capacitors in a 0.36-mm(2) CMOS chip with no external components. The sensitivity of our glucose sensor is 0.18 mu A.mm(-2).mM(-1). The system is wirelessly powered and achieves a measured glucose range of 0.05-1 mM with a sensitivity of 400 Hz/mM while consuming 3 mu W from a regulated 1.2-V supply.
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