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Remote RF powering system for MEMS strain sensors

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3 Author(s)
Chaimanonart, N. ; EECS Dept., Case Western Reserve Univ., Cleveland, OH, USA ; Ko, W.H. ; Young, D.J.

A reliable remote RF powering system is developed for industrial wireless MEMS strain sensing applications. The prototype system is insensitive to mechanical rotation and produces a stable DC voltage of 2.8 V with a 2 mA current supply capability from a 50 MHz RF power source with a power conversion efficiency of 11%. An improved efficiency can be expected with an optimized power transmitter design. The CMOS power converter electronics are fabricated in a 1.5 μm CMOS process occupying an area of approximately 1 mm × 1 mm. The achieved DC power is adequate for supplying a high-performance wireless MEMS strain sensing system.

Published in:

Sensors, 2004. Proceedings of IEEE

Date of Conference:

24-27 Oct. 2004