Parabolic shape ground plane having T-slots directional UWB antenna for airborne radar system

A novel design technique of parabolic shape ground plane directional ultra-wideband (UWB) with circular patch antenna for airborne radar system is being presented here. The feed for the proposed directional ultra-wideband antenna is given by microstrip line and T-slots are inserted diagonally at the corners of parabolic ground plane in order to increase the directivity. The simulation analysis of the antenna is done on software CST Microwave Studio using FR-4 substrate with dielectric constant 4.3. The simulated results have shown a good return loss with respect to -10 dB. The radiation pattern characteristics and surface current distributions of the antenna at different frequencies are also given.