DocumentCode
1970095
Title
Printed humidity sensor for UHF RFID systems
Author
Virtanen, Juha ; Ukkonen, Leena ; Björninen, Toni ; Sydänheimo, Lauri
Author_Institution
Dept. of Electron., Tampere Univ. of Technol., Rauma, Finland
fYear
2010
fDate
23-25 Feb. 2010
Firstpage
269
Lastpage
272
Abstract
This paper presents a printable humidity sensor for RFID systems at UHF frequencies. The sensor is printed onto Kapton HN polyimide substrate using silver ink. The sensor measures humidity capacitively through the permittivity change in the polyimide. The actual measurement result is acquired from the tag using a threshold power sweep performed by the reader device. The operation principle is explained and simulation results are shown. Simulation results predict good sensor performance and thus the sensor is ready for the prototype stage.
Keywords
UHF detectors; humidity measurement; humidity sensors; permittivity; polymers; radiofrequency identification; Kapton HN polyimide substrate; RFID tag; UHF RFID system; humidity measurement; permittivity; printed humidity sensor; reader device; silver ink; threshold power sweep; Capacitive sensors; Frequency; Humidity; Ink; Permittivity measurement; Polyimides; Radiofrequency identification; Sensor systems; Silver; UHF measurements;
fLanguage
English
Publisher
ieee
Conference_Titel
Sensors Applications Symposium (SAS), 2010 IEEE
Conference_Location
Limerick
Print_ISBN
978-1-4244-4988-0
Electronic_ISBN
978-1-4244-4989-7
Type
conf
DOI
10.1109/SAS.2010.5439426
Filename
5439426
Link To Document