CPW-fed printed fractal slot antenna for UWB applications

Abstract

In the present paper, a novel coplanar wiveguide (CPW)-fed printed fractal-shaped slot antenna for bandwidth enhancement is presented. The proposed antenna is composed of a wide fractal-shaped slot and an hexagonal parasitic patch fed by a CPW Feed. The combination of the fractal concept and CPW-fed technique allows to improve the characteristics of the proposed antenna significantly. The simulation results show that the impedance bandwidth, defined by -10 dB reflection coefficient, of the proposed antenna can reach a value of 138.35% from 2.27 GHz to 12.46 GHz with simulated peak gain variation form 2.1 to 7.3 dBi and a good radiation pattern. Compactness and stable radiation pattern make the antenna suitable for UWB applications.