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A Wireless Strain Sensing Microsystem with External RF Power Source and Two-Channel Data Telemetry Capability

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5 Author(s)
Suster, M. ; Case Western Reserve Univ., Cleveland, OH ; Jun Guo ; Chaimanonart, N. ; Ko, W.H.
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A wireless strain sensing microsystem is powered by a 50MHz signal and can simultaneously telemeter both digitized strain and temperature data over the RF powering link using passive PSK and ASK modulations, respectively. The prototype system achieves a minimum detectable strain of 0.87muepsiv over a 10kHz bandwidth with a maximum input signal of plusmn1000muepsiv. The temperature sensor resolution is 0.02Cdeg rms with a 100Hz BW. The chip is fabricated in 1.5mum CMOS and dissipates 6mW

Published in:

Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International

Date of Conference:

11-15 Feb. 2007