Irregular pentagon monopole structured antenna for ultra-wideband communication systems

In this paper a novel antenna design is proposed for ultra-wideband (UWB) communication systems. The antenna consists of irregular pentagon monopole structured section with a 50Ω microstrip feeding structure. The simulation results show that the antenna's operating bandwidth from 3.1 to 12.9 GHz which is suitable for indoor high-data rate applications. The antenna provides omni-directional radiation patterns due to its symmetrical geometrical structure. The antenna has an overall size 44mm × 30mm. The antenna is fabricated on FR4 substrate with relative permittivity of 4.4 and thickness of 1.5mm and the measured results are in a good agreement with the simulated ones.