Spectral, temporal and spatial domain analysis of a compact floral-shaped UWB monopole antenna

A simple and compact printed floral-shaped monopole antenna (FMPA) for Ultrawideband (UWB) applications is proposed. Printed monopole antennas fabricated on a substrate offer impedance band width, which can cover UWB. However, radiation pattern varies significantly over the bandwidth. The cross polar component increases with frequency and the pattern degrades from the desired omnidirectional characteristics. Thus, it is required to analyse and investigate all the antenna characteristics of wide band antennas meticulously. The proposed antenna is fed by a 50Ω CPW feed line and fabricated on RT/ Duroid substrate having dimensions 20 mm × 25.5 mm × 0.787 mm. The measured S11 is ≤ -10 dB over 3.4-13.4 GHz. The antenna shows acceptable gain flatness with nearly omnidirectional radiation patterns over UWB frequency bands. Also other spectral, temporal and spatial domain parameters i.e. group delay, transfer function, fidelity factor, pattern stability factor (PSF) of proposed structure are analysed and reported.