A novel 2 × 1 UWB-MIMO flower bouquet shaped antenna using CSRR reducing mutual coupling for wireless communication systems

In this article, a $2 \times 1$ UWB-MIMO flower bouquet has been discussed using a low-cost FR-4-epoxy material for wireless communication systems. This antenna provides a wider bandwidth impedance of $[3.42-14.64] \mathrm{GHz}$. The reflection coefficient of the proposed work achieves $\mathbf{- 3 5 . 0 4} \mathrm{dB}$. For the aims of reducing mutual coupling, a CSRR was etched on the top and the bottom of the radiation element and the isolation achieves 44.58 dB at 11.63 GHz. Furthermore, theECC parameter is less than 0.002 and the diversity gain is close to 10 dB. Moreover, the TARC parameter is low of $\mathbf{- 1 0} \mathbf{d B}$ throughout the operating bandwidth. Therefore, the proposed design is a good choice for wireless communication systems.