A review on the design of MIMO antennas for upcoming 4G communications

Multiple- Input-Multiple-output (MIMO) wireless systems forms a part of new research area, since nowadays the communication engineers are more interested in higher data rates and improved spectral efficiencies, leading to the 4G technologies. In MIMO systems, as multiple antennas are used at the transmitter and receiver side, studying the properties of various antenna array configurations and their behavior in multipath communications is required. In this paper, a brief review of recent research findings concerning the antennas and their design for MIMO systems is discussed. The future goals of MIMO antenna designers are also mentioned.