SAW bioliquids sensor with RF interrogation

Author

Leonte, I. ; Hunt, M. ; Sehra, G. ; Cole, M. ; Gardner, J.W.

Author_Institution

Sch. of Eng., Warwick Univ., UK

fYear

2004

fDate

6-7 Sept. 2004

Firstpage

47

Lastpage

52

Abstract

A system based on shear horizontal surface acoustic wave (SH-SAW) devices operating in the 433 MHz and 869 MHz industrial, scientific and medical (ISM) bands is proposed for wireless identification and characterisation of bioliquids. The theory of operation is briefly explained and details of the passive microsensors design and fabrication are presented. A small device antenna is analyzed and the interrogation unit implementation is discussed. A new low cost solution for measuring inter-pulse time delays with nanosecond resolution is also proposed.

Keywords

UHF antennas; UHF measurement; biosensors; loop antennas; microsensors; surface acoustic wave sensors; time measurement; 433 MHz; 869 MHz; ISM bands; RF interrogation; SH-SAW devices; bioliquids sensor; inter-pulse time delay measurement system; loop antenna; passive microsensors; shear horizontal surface acoustic wave devices; wireless bioliquid characterisation; wireless bioliquid identification; Acoustic waves; Biosensors; Costs; Fabrication; Microsensors; Radio frequency; Radiofrequency identification; Surface acoustic wave devices; Surface acoustic waves; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

High Frequency Postgraduate Student Colloquium, 2004

Print_ISBN

0-7803-8426-1

Type

conf

DOI

10.1109/HFPSC.2004.1360348

Filename

1360348