UWB-MIMO Diversity Antenna for Next Generation Wireless Applications

A Novel and compact UWB-MIMO antenna is proposed and analyzed. The two circular monopole antennas embedded on a FR4 substrate with dielectric constant 4.4 and substrate height of 0.8 mm. The proposed antenna with the size of 64x40 mm2, perform good diversity performance for entire ultra wideband. Antenna results are carried out on Computer simulation tool (CST) and results are analyzed in terms of return loss, isolation, antenna gain, radiation pattern and correlation coefficient. A comparative study of results has been taken into account for proposed antenna with and without ground stubs. The novel ground stubs inserted in the ground plane reduce the mutual coupling and enhance isolation from -10 dB to -18 dB for almost whole ultra wideband except the frequency range of 6.7 GHz to 9.35 GHz. A good impedance bandwidth, diversity performance makes the proposed designed antenna suitable for high-speed wireless communication system.