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A 3- \mu\hbox {W} CMOS Glucose Sensor for Wireless Contact-Lens Tear Glucose Monitoring

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5 Author(s)
Yu-Te Liao ; Electrical Engineering Department, National Chung-Cheng University, Taiwan ; Huanfen Yao ; Andrew Lingley ; Babak Parviz
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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-mm2 CMOS chip with no external components. The sensitivity of our glucose sensor is 0.18 μA·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 μW from a regulated 1.2-V supply.

Published in:

IEEE Journal of Solid-State Circuits  (Volume:47 ,  Issue: 1 )