Data-Dense and Miniature Chipless Moisture Sensor RFID Tag for Internet of Things



: Jabeen I., Ejaz A., Rahman M.U., Naghshvarianjahromi M., Khan M.J., Amin Y., Tenhunen H.

Publisher: MDPI

: 2019

: Electronics

: ELECTRONICS

: ELECTRONICS-SWITZ

: ARTN 1182

: 8

: 10

: 15

DOI: https://doi.org/10.3390/electronics8101182

: https://www.mdpi.com/2079-9292/8/10/1182

: 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.

Last updated on 2024-26-11 at 12:34