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Compact RFID Tag Antenna With SRR Structure Using Loading Technology

In view of the large size of tag antenna at present, this paper proposes a new miniaturized RFID tag antenna. It further reduces the size of the tag antenna by loading with the SRR structures as well as folding ring and capacitance loading structures. Parameter analysis is carried out to study the influence of folding ring and loading structure. Simulation results show that this kind of antenna has compact structure, good impedance matching characteristics and omnidirectional radiation patterns, and has potential application value in RFID system.