Compact UWB Vivaldi Tapered Slot Antenna

In this paper compact Ultra Wideband (UWB) Vivaldi Tapered Slot Antenna (VTSA) is designed simply by changing its Microstrip to Slot line (M/S) transition. To explain the effect of transition's shapes on the size and the performance of the UWB VTSA, four models (A-D) with detailed parametric studies are analyzed, designed, and fabricated. As compared to Model A, in Model D the size (42.9 mm x 29.28 mm = 1256.112 mm(2)) is reduced by 19.25%, and the band-width (10.34 GHz) is enhanced by 24.56%, in addition, it provides 6.51 dBi maximum realized gain, and stable end-fire radiation pattern. The validity of the proposed antennas is proven by hardware measurement results. (C) 2021 THE AUTHORS. Published by Elsevier BV on behalf of Fat Oty of Engineering, Alexandria University.

Automated summary

By changing the transition shape from Microstrip to Slot line, a compact UWB Vivaldi Tapered Slot Antenna design was achieved. Among the four models analyzed, Model D exhibited significant size reduction and improved performance, with hardware measurements confirming the validity of the proposed antennas.