Mutual coupling reduction between microstrip patch antennas by using a string of H-shaped DGS

In this paper a novel structure is proposed to reduce the mutual coupling between two coplanar microstrip antennas which resonates at the same frequency band. A simple string of H-shaped DGS is placed in between two antennas to reduce the mutual coupling. Simulated result shows that the reduction of mutual coupling up to 50dB is achieved without affecting the radiation behavior of the antennas.