A low-profile FSS-based high capacity chipless RFID tag for sensing and encoding applications

This paper presents a polarization-independent 11-bit chipless RFID tag based on frequency-selective surface which has been designed for encoding and relative humidity (RH) sensing applications. The 10 exterior U-shaped resonators are used for item encoding whereas Kapton has been incorporated with...

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Bibliographic Details
Published in:International journal of microwave and wireless technologies 2022-03, Vol.14 (2), p.176-184
Main Authors: Habib, Shahid, Ali, Amjad, Kiani, Ghaffer Iqbal, Ayub, Wagma, Abbas, Syed Muzahir, Butt, Muhammad Fasih Uddin
Format: Article
Language:English
Subjects:
Bar codes
Density
Design
Frequencies
Frequency selective surfaces
Humidity
Kapton (trademark)
Polyimide resins
Radar cross sections
Radar signatures
Radio frequency identification
Relative humidity
Resonators
RFID and Sensors
Sensors
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Summary:This paper presents a polarization-independent 11-bit chipless RFID tag based on frequency-selective surface which has been designed for encoding and relative humidity (RH) sensing applications. The 10 exterior U-shaped resonators are used for item encoding whereas Kapton has been incorporated with the interior resonator for RH sensing. This radio-frequency identification (RFID) tag operates in S- and C-frequency bands. The proposed design offers enhanced fractional bandwidth up to 88% with the density of 4.46 bits/cm2. Both single- and dual-layer tags have been investigated. The simulated results are in good agreement with measured results and a comparison with existing literature is presented to show the performance. Simple geometry, high code density, large frequency signature bandwidth, high magnitude bit, high radar cross-section, and angular stability for more than 75° are the unique outcomes of the proposed design. In addition, RH sensing has been achieved by integrating the Kapton on the same RFID tag.
ISSN:1759-0787
1759-0795
DOI:10.1017/S1759078721000362