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MIMO ANTENNAPROPOSED OBJECTIVESTo design a high capacity MIMO system at the frequency below 1 GHz andabove 1 GHz.In this, the high capacity MIMO (Multiple-Input Multiple-Output) system at the frequency of5.5 GHz was designed in HFSS (High-Frequency Structure Simulator) 13. The antennadesign was the compact antenna based on the coplanar waveguide fed with hexagonal ringelement antenna. Design a MIMO antenna with small size while obtaining a very high isolationcoefficient.The MIMO antenna was designed by choosing the compact size. The size of the substratewas chosen as the (26x26) mm with the thickness of about 1.5 mm. The Antenna Array wasprinted on the FR4 Substrate having the Relative Permittivity of 4.4. The metallic SMAConnectors were also used in the model. The Coplanar waveguide (CPW) to the input portwas taken as the 50 ohms.Overall Model
To compare the performance of proposed antenna with the existing antenna.RESULTS1)Result of MIMO Antenna ArrayIn this work, the results the improved to -61 dB Comparison of this work with the base workThey are getting the Isolation as -10 dB, but in this improved work, the isolation is about -61Db. In this work, the antenna size is compact as compared to the base paper. They have takenthe substrate size as (25x40) mm, but in this case, the size of the substrate was taken in themore compact dimensions as (25x25) mm. 2)Radiation Pattern for rETotal Curve
3)Radiation Pattern for rEX Curve4)Radiation Pattern for rEY Curve