In this paper proposed a comparative analysis of different MIMO patch antenna. For the isolation improvement of MIMO antenna in the last decade there are different methods are presented. In this comparative study of the discuss the different method based patch antenna. Performance calculations for MIMO antennas may be done using a variety of characteristics, including mutual coupling evaluation and envelop correlation rectification. For better performance with various parasitic components, several research projects have been conducted in the last decade on the diverse MIMO antennas that are available. This review study discusses the design of several MIMO antennas for improved performance employing various intrinsic components in the region. The results of this study demonstrate that there are two distinct types of tables that represent various structures. The first table displays the topology and the mutual coupling of the radiation pattern; second table shows the different resultant parameters-based comparison.

Electric Band Gap, Defected Ground Structure, Current Localization Structures, Parasitic elements, Meta-Material Structures, Coupling Reduction Techniques and Isolation Enhancement etc