Passive UHF RFID Tag for Heat Sensing Applications

A possible method of utilizing paraffin wax as a substrate material in developing a threshold heat sensing radio frequency identification (RFID) tag is discussed. A small narrowband passive UHF RFID tag is made on top of a multilayer substrate. Paraffin wax acts as the main heat sensitive layer of t...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2012-09, Vol.60 (9), p.4056-4064
Main Authors: Babar, A. A., Manzari, S., Sydanheimo, L., Elsherbeni, A. Z., Ukkonen, L.
Format: Article
Language:English
Subjects:
Antenna measurements
Antennas
Applied sciences
Exact sciences and technology
Heat sensor
Heating
low cost
paraffin wax
radio frequency identification (RFID)
Radiofrequency identification
Radiolocalization and radionavigation
Substrates
Telecommunications
Telecommunications and information theory
Temperature sensors
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Summary:A possible method of utilizing paraffin wax as a substrate material in developing a threshold heat sensing radio frequency identification (RFID) tag is discussed. A small narrowband passive UHF RFID tag is made on top of a multilayer substrate. Paraffin wax acts as the main heat sensitive layer of the substrate. The properties and characteristics of the paraffin layer change due to heat. The narrowband tag on top of the substrate is designed to be sensitive enough to detect any structural and physical changes of the substrate material. The changes in the properties of the substrate material will cause a shift in the operating frequency of the tag. This frequency shift will reduce the performance of the narrowband RFID sensor tag. The change in the properties of paraffin wax after being exposed to heat is irreversible under normal conditions and therefore, the proposed RFID tag can be referred to as a threshold heat sensing device. Such a low-cost solution can be useful in detecting heat exposures in various supply chains and transportation mishandling of heat sensitive items.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2012.2207045