A novel design of ultra wideband Slotted Vertical Semi Elliptical Sheet Antenna

The paper presents a new UWB antenna named as Slotted Vertical Semi Elliptical Sheet Antenna. The simulated return loss, VSWR, input impedance and radiation pattern are discussed in this paper. The results show that the voltage standing wave ratio is less than 2 (VSWR<; 2) and return loss (S
₁₁
) is less than -10 dB along the operation bandwidth of 4.1 GHz to 12.5 GHz. The asymmetry in the feed position results in increase of the band width but degrades the radiation pattern. However, the radiation pattern can be made directional using an appropriate reflector. The simulated radiation patterns after adding a reflector have also been discussed in the paper.