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A Novel Compact Antenna for Passive UHF RFID Tag Using π-Match and Meander Techniques

In this work, a novel passive tag antenna has been designed, investigated and proposed for UHF RFID applications. It has a small size and can operate in the North and South American band (902-928 MHz). The proposed antenna was etched on a low-cost FR4 substrate with an overall size of 54 × 24 × 0.8 mm in order to be applied as UHF RFID tag antenna at the center frequency of 915 MHz. It consists of embedded Π-match, meandered arms, and an RFID chip placed at the center. The meander line technique is used to assure the miniaturization and the Π-match technique to have a good impedance matching. This antenna has a good reflection coefficient and good read range.