A Compact Size CPW-Fed Ultra-Wideband (UWB) Antenna for Wireless Networks

This paper presents an ultra-wideband (UWB) compact size printed monopole antenna with improved gain and efficiency. This broadband printed monopole antenna contains a cup-shaped radiator fed by a coplanar waveguide (CPW) technique. The designed UWB antenna is fabricated on a less-priced FR-4 substrate with relative permittivity of 4.3, loss tangent of 0.025, and a standard height of 1.6 mm, sized at 31.68 mm
$\times 23.76$
mm
$\times 1.6$
mm suitable for wireless communication system. The designed UWB antenna works with maximum gain (peak gain of 4.1 dB) across the whole UWB spectrum 3–11 GHz. The
$S_{11}$
results are simulated and measured, and the results are debated in detail.