Low bandwidth chipless RFID tag using complementary split ring resonator

Sajjad Tijeri-Mofrad, Sajad Mohammad-Ali-nezhad and Amir Hossein Zarif

Journal of Electromagnetic Waves and Applications, 2021, vol. 35, issue 8, 991-1007

Abstract: A small structure for chipless RFID tag is proposed; it is inspired by a C-shaped structure and based on HCSRR. This structure has curved strips, which are obtained by fine cutting the substrate from the symmetry of the C-shaped structure as base structure, and then missing part of the path is compensated by creating the PMC boundary condition in the cut-off point according to the image theory. Hence, the resonant frequencies of the proposed structure remain the same as those of the base structure. The substrate is Rog4003 with ϵr=3.55 and dimensions of 30×15×0.8 mm3, the ratio of area to lambda for the first resonant in 2.4 GHz is 0.073, and the average distance between two resonances is 300 MHz Half the structure without adding any other element reduces the production cost by 50%. Moreover, the structure can be printed on flexible substrates due to its simple design and non-complexity.

Date: 2021
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DOI: 10.1080/09205071.2020.1865842

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