Title :
A Wireless Strain Sensing Microsystem with External RF Power Source and Two-Channel Data Telemetry Capability
Author :
Suster, Michael ; Guo, Jun ; Chaimanonart, Nattapon ; Ko, Wen H. ; Young, Darrin J.
Author_Institution :
Case Western Reserve Univ., Cleveland, OH
Abstract :
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
Keywords :
CMOS integrated circuits; amplitude shift keying; microsensors; phase shift keying; strain sensors; telemetry; temperature sensors; 1.5 micron; 50 MHz; CMOS technology; data telemetry; external RF power source; passive ASK modulation; passive PSK modulation; temperature sensor resolution; wireless strain sensing microsystem; Amplitude shift keying; Capacitive sensors; Digital modulation; Phase shift keying; Prototypes; RF signals; Radio frequency; Telemetry; Temperature sensors; Wireless sensor networks;
Conference_Titel :
Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0853-9
Electronic_ISBN :
0193-6530
DOI :
10.1109/ISSCC.2007.373453
