A wireless SAW-based temperature sensor for harsh environment

Author

Hauser, R. ; Fachberger, R. ; Bruckner, G. ; Smetana, W. ; Reicher, R. ; Stelzer, A. ; Scheiblhofer, S. ; Schuster, S.

Author_Institution

Carinthian Tech. Res., Villach, Austria

fYear

2004

fDate

24-27 Oct. 2004

Firstpage

860

Abstract

A SAW-based temperature sensor system is presented. Much effort was placed in the development of a high temperature resistive transponder compromising of both a SAW device and an antenna stable up to 400 °C for at least a few days. The system solution also includes a low-cost reader unit employing the FSCW (frequency stepped continuous wave) principle operating in the ISM band from 2.4 GHz to 2.4835 GHz. Spare space on the SAW device has been employed also to implement an ID for identification purpose. Hence, this solution also allows for tagging of objects exposed to harsh environments.

Keywords

UHF antennas; microstrip antennas; radiofrequency identification; surface acoustic wave sensors; temperature sensors; transponders; 2.4 to 2.4835 GHz; ISM band; SAW device; antenna; frequency stepped continuous wave principle; harsh environment; identification; patch antenna; reader unit; resistive transponder; tagging; wireless SAW-based temperature sensor; Acoustic waves; Bandwidth; Radio frequency; Sensor systems; Substrates; Surface acoustic wave devices; Surface acoustic waves; Temperature sensors; Transducers; 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.2004.1426306

Filename

1426306