Author : Manisha Dhiman, Sonia Saini and Dimpy Ahuja

The goal of this paper is to use DGS in MIMO antenna to enhance the antenna performance parameter. The concept of DGS with MIMO antenna reduce antenna size and reduce mutual coupling between the antenna elements. It also enhances parameters such as gain, directivity, return loss, and efficiency. The MIMO antenna have two symmetric monopole, one metal strip, one triangle and two novel bent slits. In this paper double E shaped DGS connected to each other are etched in the ground plane. The analysis has been done by using IE3D software based on method of moments (MOM). The result shows that parameter |s11|≤ -10db is achieved at freq. 6.07 GHz with double E shaped DGS and parameter |s11|≤ -10db is achieved at freq. 6.18 GHz with modify double E shaped DGS. The result comparison of antenna with and without DGS are also shown in this paper.

Keywords: DGS, MIMO antenna, return loss, gain, directivity, antenna efficiency, radiation efficiency

Article published in International Journal of Current Engineering and Technology, Vol.5, No.5 (Oct-2015)