A1 Refereed original research article in a scientific journal
Data-Dense and Miniature Chipless Moisture Sensor RFID Tag for Internet of Things
Authors: Jabeen I., Ejaz A., Rahman M.U., Naghshvarianjahromi M., Khan M.J., Amin Y., Tenhunen H.
Publisher: MDPI
Publication year: 2019
Journal: Electronics
Journal name in source: ELECTRONICS
Journal acronym: ELECTRONICS-SWITZ
Article number: ARTN 1182
Volume: 8
Issue: 10
Number of pages: 15
DOI: https://doi.org/10.3390/electronics8101182
Web address : https://www.mdpi.com/2079-9292/8/10/1182
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/44380887
A novel and miniaturized semi-elliptical 20-bit fully passive chipless RFID sensor tag is proposed in this article. The realized sensor tag is made up of semi-elliptical shaped open-end slots within the compact size of 25 mm x 17 mm. The multi-substrate analysis of the proposed tag is examined using non-flexible and flexible materials. The articulated tag configuration is capable of monitoring moisture levels when the largest resonator is covered by a heat-resistant sheet of Kapton HN (DuPontTM). The proposed tag functions in the operational frequency band of 4.1 GHz-16 GHz and possesses the overall bit density of 4.70 bit/cm(2). The structure is composed of a thin passive substrate layer topped with an active layer of conductive path and is considered as a potential candidate for low-cost identification of the tagged objects. In addition to that, its moisture sensing property and flexible nature make it a reliable smart sensor for conformal applications.
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