Remote RF powering system for wireless MEMS strain sensors

N. Chaimanonart, D.J. Young
2006 IEEE Sensors Journal  
A reliable remote radio frequency (RF) powering system is developed for industrial wireless microelectromechanical systems (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
more » ... lectronics are fabricated in a 1.5-m CMOS process occupying an area of approximately 1 1 mm. The achieved DC power is adequate for supplying a high-performance wireless MEMS strain-sensing system. Index Terms-Inductive coupling, microelectromechanical systems (MEMS) microsystems, radio frequency (RF) powering system, strain sensors, telemetry. Darrin J. Young received the B.S., M.S., and Ph.D. degrees from the
doi:10.1109/jsen.2006.870158 fatcat:nzc5wwqk2ffoji4fmig6qghnmu