A new structure of a miniature and flexible printed UHF RFID TAG

A new Miniaturized RFID tag has been designed and optimized using meander theory and split ring resonator theory. The proposed RFID tag is designed and adapted for an UHF chip with Zchip=30.39-i*211Ohm. The proposed RFID tag is simulated using an EM solver and supported to operate in UHF sub-band [866.9-870.9MHz] with a band width of 4MHz. A prototype has been fabricated using inkjet method on a polyimide substrate and has been tested using a RFID base station which has proved an excellent agreement between theoretical reading range and experiment which is over up 4m.The miniaturized RFID tag is highly suitable for applications require a middle range between 4 and 8m and a flexible compact RFID tag for integration on items such clothing application and access control.