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Circular multi‐usage RFID tag antenna with coding ability for chipless application
Author(s) -
Tang Tao,
Olaimat Melad,
Aldhaeebi Maged,
Wen Guangjun,
Xiao Li
Publication year - 2020
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22432
Subject(s) - chipless rfid , radio frequency identification , microstrip , antenna (radio) , acoustics , patch antenna , capacitor , loop antenna , impedance matching , antenna tuner , electronic engineering , microstrip antenna , electrical impedance , engineering , computer science , electrical engineering , physics , resonator , antenna efficiency , antenna factor , computer security , voltage
A circular tag antenna for the ultra‐high frequency radio frequency identification band, with an outer radius of 25 mm is proposed. The proposed design consists of a loop radiation element, two symmetrical microstrip feed lines, resonant rings, and resonant arms. Simulation and measurement results show that the proposed antenna can operate steadily in free space, and on the surface of the human body, water‐filled container, and metal along with good conjugate impedance matching. The maximum measured reading range of 3.6 to 6.9 m can be achieved depending on the background. Utilizing a matching circuit, parallel combination of an inductor and capacitor at the feeding port, a point frequency working state at any frequency can be realized. Consequently, it can be used as a frequency signature chipless tag with coding capability.