The development of 5G Technology is aimed at increasing the current data rates existing in mobile communication. The existing 4G technology operates in the 2-8 GHz band and supports data rates of more than 20 Mbps while 3G, operating in the 1.8-2.5 GHz band supports data rates up to 2 Mbps. The developing 5G technology utilizes the sub 6 GHz band and millimetre wave bands of which are specified by FCC and is capable of supporting data rates up to 1 Gbps. With increasing demand for high data rates, 5G antenna proves to exhibit itself as potential candidate to meet the requirements of the subscribers. The project discusses the design of microstrip based antenna for operation in the S- band. A novel design comprising 1x2 microstrip array antenna is presented for 5G mobile communications. The proposed antenna is placed on a compact Rogers RT duroid 5880 lossy dielectric substrate with a relative permittivity of 2.2. A gain of 9.44 dB was achieved for a 1x2 microstrip array antenna with good return loss of -24 dB; VSWR is under 2 and radiation efficiency 81.52%. The antenna is designed and optimized using CST Microwave Studio Suite.