RFID Systems Composed of Multiband Antenna with Fractal Geometry

Two tri-band RFID tag and reader antennas are proposed in this paper. The primary aim of the proposed work isto achieve multi-band antennas by implementing fractal designs as radiating elements. The RFID reader antenna is createdby using modified fractal tree structure; the operating frequencies are 3.6 GHz, 5.8 GHz, and 8.2 GHz. The recursive rectangular is implemented in RFID tag antenna operates at 3.9 GHz, 5.9 GHz, and 8.2 GHz for the RFID applications of goods management, traffic toll fee collection, telemetry respectively. The proposed reader antenna achieved a highest read range of 87.5 cm and tag antenna accomplished 85.6cm.