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Miniature RFID tri-band CPW-fed antenna optimised using ISPO algorithm

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6 Author(s)
Li, H.H. ; Sch. of Electron. & Inf. Eng., Xi'an Jiaotong Univ., Xi'an, China ; Mou, X.Q. ; Ji, Z. ; Yu, H.
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A novel tri-band CPW-fed antenna designed for RFID applications is reported. Limited to 30 × 30 × mm2 area on a PCBoard with εr = 4.4, the antenna has four U-shaped, two F-shaped and two L-shaped slots as additional resonators to achieve multi-band operation. The intelligent single particle optimisation (ISPO) algorithm is used to determine the optimised slot configuration for the best return loss at 0.92, 2.45, and 5.8 = GHz simultaneously. The performance of the designed antenna was characterised through simulations using the finite element method.

Published in:

Electronics Letters  (Volume:47 ,  Issue: 3 )