Different techniques for creating notches in a planar monopole UWB antenna

In this paper, a compact printed monopole UWB antenna is presented, followed by various techniques for creating stop bands in order to mitigate interference between co-existing UWB systems. The antenna consists of a two-step beveled radiating patch and a reduced ground plane which accounts for good impedance matching from 3.1 GHz to 10.6 GHz. A wide bandwidth of 8.7 GHz is obtained between 3.5 GHz to 12.2 GHz. A comparative analysis is presented by etching out slots of various shapes near the feed line in order to effectively reject WLAN frequencies (5.15-5.35/5.725-5.8825 GHz). All the analysis for the proposed antenna is done in HFSS 2014.