Title :
Remote RF powering system for MEMS strain sensors
Author :
Chaimanonart, Nattapon ; Ko, Wen H. ; Young, Darrin J.
Author_Institution :
EECS Dept., Case Western Reserve Univ., Cleveland, OH, USA
Abstract :
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.
Keywords :
AC-DC power convertors; CMOS analogue integrated circuits; VHF devices; electric potential; microsensors; power transmission; radio links; strain sensors; 1 mm; 1.5 micron; 2 mA; 2.8 V; 50 MHz; CMOS power converter electronics; DC voltage; RF power source; current supply; industrial wireless MEMS strain sensors; power conversion efficiency; power transmitter; remote RF powering system; wireless sensors; CMOS process; Capacitive sensors; Electricity supply industry; Mechanical sensors; Micromechanical devices; Power system reliability; Prototypes; Radio frequency; Sensor systems; Wireless sensor networks;
Conference_Titel :
Sensors, 2004. Proceedings of IEEE
Print_ISBN :
0-7803-8692-2
DOI :
10.1109/ICSENS.2004.1426478
