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An electrically small passive UHF-RFID tag based on a square-shaped split ring resonator antenna is presented. An analytical formulation of the radiation properties and the chip impedance matching is provided. A tag prototype of size 31 mm × 31 mm (λ0/11 × λ0/11) is designed and fabricated. The simulated and measured results are in good agreement with the theoretical analysis and the measured read...
An electrically small planar passive UHF-RFID tag based on an edge-coupled split ring resonator (EC-SRR) antenna is presented in this work. In order to explore the potentiality and limitations of the SRR antenna and to aid the tag design, an analytical study of the SRR radiation properties at its fundamental resonance is presented for the first time. Radiation resistance, efficiency, polarization,...
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