Integrated passive and wireless sensor for magnetic fields, temperature and humidity

Author

Bodong Li ; Yassine, Omar ; Kosel, Jurgen

Author_Institution

Comput. Electr. & Math. Sci. & Eng. Div., King Abdullah Univ. of Sci. & Technol., Thuwal, Saudi Arabia

fYear

2013

fDate

3-6 Nov. 2013

Firstpage

1

Lastpage

4

Abstract

This paper presents a surface acoustic wave-based passive and wireless sensor that can measure magnetic field, temperature and humidity. A thin film giant magnetoimpedance sensor, a thermally sensitive LiNbO₃ substrate and a humidity sensitive hydrogel are integrated together with a surface acoustic wave transducer to realize the multifunctional sensor. The device is characterized using a network analyzer under sequentially changing humidity, temperature and magnetic field conditions. The first hand results show the sensor response to all three sensing parameters with small temperature interference on the magnetic signals.

Keywords

giant magnetoresistance; humidity sensors; hydrogels; magnetic field measurement; magnetic sensors; magnetoresistive devices; network analysers; surface acoustic wave transducers; temperature measurement; wireless sensor networks; LiNbO₃; humidity sensitive hydrogel; magnetic fields; multifunctional sensor; network analyzer; surface acoustic wave transducer; surface acoustic wave-based passive sensor; temperature measurement; thermally sensitive LiNbO₃ substrate; thin film giant magnetoimpedance sensor; wireless sensor; Humidity; Magnetic fields; Surface acoustic waves; Temperature measurement; Temperature sensors; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

SENSORS, 2013 IEEE

Conference_Location

Baltimore, MD

ISSN

1930-0395

Type

conf

DOI

10.1109/ICSENS.2013.6688134

Filename

6688134