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A 9.2µA gen 2 compatible UHF RFID sensing tag with −12dBm Sensitivity and 1.25µVrms input-referred noise floor

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4 Author(s)
Yeager, D. ; Univ. of Washington, Seattle, WA, USA ; Fan Zhang ; Zarrasvand, A. ; Otis, B.P.

This work presents a 9.2 μA fully-passive sensor tag in 0.13 μm CMOS for biomedical research and human health monitoring. The sensor tag includes a 260 nA temperature-compensated 3 MHz reference oscillator. Subthreshold tag logic consumes 6μA from the 0.7 V supply. A 1.2 μA fully-differential chopper-stabilized amplifier with 1.25 μVrms input-referred noise is integrated for sensor interfacing. The system exhibits a range of 3 m and was deployed to perform wireless in-flight recording on a moth.

Published in:

Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International

Date of Conference:

7-11 Feb. 2010