Design and fabrication of modified fractal antenna for UWB applications

摘要

A modified fractal antenna for bandwidth enhancement is proposed in this paper. The proposed antenna has stair-slots on the ground plane and cross square fractal element as radiating element. The overall size of the proposed antenna measures 31.35 mm × 18.7 mm × 1.6 mm. The proposed fractal UWB antenna is simulated using CST Microwave Studio. The antenna has broad impedance bandwidth of 8.1 GHz from 2.6 GHz to 10.7 GHz at 8 dB reference level of return loss. The antenna is designed on a low cost FR-4 substrate. The proposed antenna is fabricated and the results are validated using measurements. The proposed antenna may be a useful tool for UWB communication systems.