Dual band notched CPW fed printed monopole antenna for UWB applications

Abstract

A Coplanar waveguide (CPW) fed printed monopole antenna with dual notch band characteristics is proposed for Ultra wideband (UWB) applications. The Ultra wideband antenna operates from 2.48 GHz to 18.35 GHz. Dual notch band is achieved by incorporating double H-slot structure in the radiating element. It achieved notch bands at 3.5GHz (WiMAX) and 8.3GHz (military/radar). The proposed antenna is investigated for the notch bands and operating band as well for various performance parameters like voltage standing wave ratio (VSWR), surface current distribution and far field radiation characteristics. It achieved a peak gain of 5.2dB in the operating band. The proposed antenna is fabricated on fr4 substrate of dimensions 37 x 40 x 1.6 mm3. By analysing the simulated and measured results of the proposed antenna it is observed that the proposed antenna is good for UWB applications by eliminating WiMAX and military/radar application interferences.