Design of a dual polarized ultra wideband dual feed dumb-bell patch antenna with splattered ring EBG for ultra high speed communications

Microstrip patch antennas possess low bandwidth and gain. In order to improve the performance parameters in these antennas, many structures like Electromagnetic Bandgap Structures (EBG), Defective Ground Structures (DGS) and Metamaterials (MTMs) are proposed. This paper presents a ultra wideband, dual polarized and highly efficient dual feed dumbbell shaped patch antenna. The proposed patch is mounted on the splattered ring Electromagnetic Bandgap (EBG) structure. Overall dimensions of the patch are 25 x 30 x 1.524mm3. The proposed antenna is possesses an axial ratio of 2.1dB at 11.78GHz and axial ratio higher than 4dB in the remaining band. The proposed antenna is possesses bandwidth of 20.2GHz (171.4%) with the gain varying from 6.21dB to 9.03dB in frequency range of 10.8GHz-31GHz. This further possesses efficiencies varying from 88.34% to 91.06% in the said frequency range. The whole structure is designed using CST Microwave studio 2016.