Compact Planar UWB Antenna with Dual Notched Bands Using Slotted Conductorbacked Plane

Abstract

A compact design of a coplanar waveguide fed (CPW-Fed) monopole antenna with ultra wideband (UWB) performance and dual bandnotched characteristics is proposed. Dual band-notched characteristics are achieved by U-shaped slot inside the slotted conductor-backed-plane
and a pair of mirror rectangular-shaped slots at the two sides of the truncated conductor-backed plane. The proposed antenna has a small size of 18 ×18 mm2 , and measured to cover the bandwidth for UWB ( 2.7-14.5 GHz) for VSWR<2, except the bandwidths of 3.1-3.6 for WiMAX and
5-6 GHz for WLAN. The antenna has an omnidirectional radiation across the whole ultrawideband as validated by the measured radiation pattern and gain.