Author : Prabhat Sharma and Taimoor Khan

 
In this paper, a compact MIMO antenna with DGS (defective ground surface) is proposed. The proposed DGS of Rectangular shape is placed in ground plane. It’s offer a mechanism to improve antenna performance, reduce antenna size and reduce antenna to antenna coupling on platforms. In this way, the performance parameters of MIMO antennas can be further improved. The concept of DGS is also used to collectively enhance the impedance bandwidth of antenna. A high bandwidth is achieved with S11≤-10dB and S21≤-18dB from 2.057 to 6.140 GHz is achieved. The analysis has been done by using IE3D software based on method of moments (MOM). In this paper we also introduced the comparison of performance parameters of two antennas proposed MIMO antenna with DGS structure with MIMO antenna using IE3D software.

Keywords: Defective ground structure (DGS), MIMO Antenna, Directivity, Gain, Antenna Efficiency, Radiation Efficiency.

Article published in International Journal of Current  Engineering  and Technology, Vol.3,No.3(Aug- 2013)