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 aforementioned 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 a steps-type structure having a 1-mm dimension 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 × 30 × 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 bands ranging from 3.8 to 5.3 and 6.2 to 7.3 GHz, thereby covering worldwide interoperability for microwave access and satellite bands. In this study, the time-domain features were also examined, and group delay was found to be less than 1 ns across the operational frequency except at the notch band. The simulated and measured results were in line and assure that the designed antenna is appropriate for UWB applications.