A Wrench-Shaped Monopole-Like Slot Antenna For UWB Applications

Abstract

A novel wrench-shaped monopole-like microstrip slot antenna for ultrawideband (UWB) use is designed and fabricated in this paper. The proposed antenna is composed of a wrench-shaped radiating patch to achieve ultrawide frequency band. The impedance matching is improved by etching double T-shaped slots on the background plane. Measured results show that the UWB antenna has a maximum gain of 5.5 dBi and an impedance bandwidth of 9 GHz (3–12 GHz) which covers entire UWB band. The dimension of this antenna is 35×30×1.6 mm3.