Mutual coupling reduction of a 2.6 GHz Dual-Element MIMO Antenna System with EBG structures

This paper presents new Electromagnetic Band Gap (EBG) structures for a 2.6 GHz Dual-Element MIMO Antenna System. The structure derives from the traditional mushroom, but with the unique shape of the patch, the change of via´s position, and the inverted T shape layout of the structure unit cells. The via´s position is optimized in the HFSS software, and the simulated results shows that the mutual coupling is largely improved with the S21 parameter as significant -32dB. In addition, the return loss and the radiation characteristic still remain in the reasonable level, proving that the EBG structures are effective and reliable for the MIMO antenna system.