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

fYear

2004

fDate

24-27 Oct. 2004

Firstpage

1522

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2004. Proceedings of IEEE

Print_ISBN

0-7803-8692-2

Type

conf

DOI

10.1109/ICSENS.2004.1426478

Filename

1426478