Design of Non-Concentric Circular UWB Fractal Antenna for Wireless Communication

This paper proposes new design of Ultra-Wideband (UWB) antennas using multiple rings with and without notch. A parametric study of antenna parameters, including the length and width of the ground plane, the gap between the patch and ground, and iteration number is presented. The optimized design has been printed on a FR4 substrate of εr = 4.3, h = 1.53mm with substrate size of 44.2mm x 45 mm. The experimental result of antenna exhibits the ultra wide band (UWB) characteristics from frequency 3.07 GHz to 15 GHz except the notched-band. The notched-band characteristics has been achieved by incorporating the U-shape slot into the CPW-fed. The experimental radiation pattern of antenna is nearly omnidirectional in azimuth plane and dumbly shape in E-plane. The cross polarization of the antenna is -10 dBi at 4.35 GHz and reduces with the increase in frequency. The simulated and experimental results are in good agreement. These antennas can be used for UWB system, Satellite and Space applications.