Reduction of Mutual Coupling between Patch Elements Using Split-ring Dgs

A defected structure etched in the metallic ground plane effectively disturbs the shield current distribution in the ground plane and thus, DGS potentially obtains wide reject-band, which meet the emerging application challenges. Microstrip patch antenna arrays are very popular for today’s wireless communication system. In this paper a new scheme is proposed to reduce the mutual coupling between two elements of a patch antenna arrays operated in 5.8 GHz. A split ring DGS cell is placed in between patch elements, which enable to reduce the surface wave and able to reduce the mutual coupling between them. This method may be adopted to reduce the overall real estate of a multi-element patch array system.