A modified microstrip-fed two-step tapered monopole antenna for UWB and WLAN applications

Abstract

This paper presents a novel modified Printed Tapered Monopole Antenna (PTMA) for ultra wideband (UWB) wireless communication applications. The proposed antenna consists of a truncated ground plane and two-tapered radiating patch separated by a slot (air gap) of different slopes, which provides a wideband behavior and relatively good matching. Moreover, the effects of a modified T-shaped slot inserted in the first tapered patch, on the impedance matching is investigated. The antenna has a small area of 23 × 26.5 mm2 and offers an impedance bandwidth as high as 100% at a centre frequency of 7.2GHz for S11