A RECTANGULAR SLOTTED DUAL NOTCH UWB ANTENNA FOR WIRELESS COMMUNICATION APPLICATION

Abstract

Data traffic is expanding in direct proportion to advancements in electronic systems and wireless communication. Increased bandwidth can alleviate data congestion. To meet the above demand a rectangular U-slotted Ultrawideband (UWB) dual notch antenna with a half cut ground structure is introduced in this work. The UWB is achieved by connecting the radiator via steps type structure having a dimension of 1mm around the radiator's edges. Furthermore, the ground plane is lowered, with horizontal slits etched on it. The radiator and ground plane modifications aid in achieving a larger impedance bandwidth. The UWB antenna has an overall geometry of 40 x 30 x 1.6 mm3. The projected UWB antenna operates in the frequency range of 2.6-3.9 GHz with greater than 3.2 dB gain across the impedance bandwidth. To achieve the notching in the design a U-shaped slot is carved in the radiator. This modification leads to dual notch frequency band ranging from 3.8-5.3 GHz and 6.2-7.3 GHz, thereby covering WiMAX and Satellite band. The time-domain features are also examined, and group delay is found to be less than 1 ns across the operational frequency except at the notch band. The simulated and measured results are in line and assure the designed antenna appropriate for UWB applications.