Cheonhoo Jeon, Jahyun Koo, Kyong-Taek Lee, Su-Kyoung Kim, S. Hahn, Byungsub Kim, Hong-June Park, J. Sim
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A 143nW Glucose-Monitoring Smart Contact Lens IC with a Dual-Mode Transmitter for Wireless-Powered Backscattering and RF-Radiated Transmission Using a Single Loop Antenna
This paper presents a smart contact lens (SCL) controller IC with a high-precision current sensor interface and a dual-mode wireless telemetry, where a single power-oscillator-based circuit with an external loop antenna supports both LSK and RF data transmission. The implemented IC in $0.18 \mu m$ CMOS, achieving a dynamic conversion range of 89 dB while dissipating 143 nW, is verified in a glucose-sensing SCL system.
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