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High coding capacity chipless radiofrequency identification tags
Author(s) -
Abdulkawi Wazie M.,
Sheta Abdelfattah A.
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32057
Subject(s) - chipless rfid , resonator , microstrip , resonance (particle physics) , coding (social sciences) , dielectric , acoustics , electronic engineering , optoelectronics , computer science , physics , materials science , engineering , mathematics , statistics , particle physics
Abstract A novel tristate coupled line microstrip resonator is proposed for compact chipless radiofrequency identification tags. The proposed resonator can be reconfigured to present one of the three possible states: 00, 10, and 01, which denote no resonance, resonance at f 1 , and resonance at f 2 , respectively. The resonator can be designed with f 1 and f 2 at appropriate positions, reducing the required spectrum. A multiresonator prototype consisting of 14 elements of the proposed resonator is designed, analyzed, and experimentally characterized. This prototype is implemented on an RT Duroid 5880 substrate with a dielectric constant of 2.2 and a thickness of 0.78 mm. The prototype can be reconfigured for 3 14 codes. A test‐bench comprising six resonators and transmitting and receiving wideband antennas is established and used to experimentally characterize a prototype tag. The experimental results exhibit good agreement with the simulation.