Strip lined - Truncated ground plane for flat response of miniaturized UWB patch antenna

In this paper a detailed study of the effect of strip line on truncated ground plane of a small Ultra Wide Band (UWB) patch antenna is described. The radiator and ground plane of the antenna are etched onto a piece of Printed Circuit Board (PCB) with an overall size of 25×25×1.5 mm. The results obtained from the simulation of the proposed antenna are compared with that of the results of a patch having regular truncated ground plane. The simulation results show that the antenna not just achieved a broad operating bandwidth of 6.2-11.6 GHz for a 10-dB return loss; in addition it provided a constant return loss of -20 dB for a bandwidth of 6.4 - 10.6 GHz, this indicated a constant Gain for the entire UWB.