Compact UWB Monopole Antenna with Wide Band Notching Using DGS Based Dual Mode Resonator.

A simple and compact ultra-wideband (UWB) antenna with a novel wide band notching using Defected ground structure (DGS) based dual mode resonator is presented. This proposed dual mode resonator is not only used for band notching but also helps to increase the ground currents for better impedance matching over wide bandwidth. The antenna has a thin vertical strip structure, which yields a 10dB return loss bandwidth from 3.1to10.6 GHz, band notching from 5.15 to 5.825 GHz, cross polarization of more than 20 dB, and good omni-directional radiation pattern. The proposed antenna is compact in size and has wide band notch. It can be easily fabricated with low cost material. Hence, this proposed antenna is more suitable for wireless systems with high interference. [ABSTRACT FROM AUTHOR]