Researchers are currently looking into radio frequency bands that can adapt to the ever-intensifying requirements of cellular data users due to the exponential growth of wireless data transmission. To meet the increasing demands for connectivity and capacity, the wireless framework must be verb cultivated and implemented. In order to satisfy the requirement of free-standing devices and implementation for towering-speed data conveyance, this proposed MIMO (multiple input multiple outputs) is to be a good nominee. The design of antennas, which are an essential component of any wireless communication system, necessitates considerable expertise. The nominated antenna represents the 1 × 2 MIMO antenna geometry structure. The material used to fabricate is FR4 epoxy material. This material is low in cost and it’s commercially accessible. The working frequency of the manuscript antenna is 1 GHz to 12 GHz. The varying sizes of the I-ground region and radiation elements reveal the structure's optimization. Isolation improvement of the antenna is noticeable by changing the breadth and longitude of the I-shaped ground. The most noteworthy isolation is getting about more prominent than 20 dB and the ECC esteem is around 0.05 for the introduced antenna. The simulated and measured consequences are correlated to establish the structure's authenticity. Radiation pattern, antenna gain, directivity, normalized directivity, isolation, and crucial parametric analysis of the antenna are measured. This MIMO antenna is admissible for divergent applications like satellite, WLAN, WPAN, and defense.