Spiritual leaf shape compact MIMO patch antenna for 5G lower sub-6 GHz applications

Abstract

Abstract For the 5G applications of future sub-6 GHz a novel planar very low compact MIMO antenna is designed with improved isolation and impedance matching with T-shaped ground plane and mode analysis is presented here. A very low compact substrate with an area of 48 mm × 24 mm spiritual leaf shape radiating patches are situated in the same direction and maintained a separation distance of 2 mm. To improve the isolation and improved bandwidth, a remodeled structure of T-shaped grounded stub is placed among the pair of radiating antenna elements. The spiritual shaped antenna maintain a −10 dB required operating band of 2.43–3.01 GHz (580 MHz) and 3.19–3.84 GHz (650 MHz) with an isolation more than 20 dB maintained between antenna elements. The spiritual leaf shape antenna offers a radiation efficiency of 94.4 & 86.99% and its peak gain about 7.2 & 6.3 dBi. The simulated isolation is greater than 30 dB thought the dual-band with a maximum isolation of 54 dB. For this MIMO design diversity gain is around 10 dBi, channel capacity loss is less than 0.2 bits/s/Hz, group delay <1 ns and envelope correlation coefficient (ECC) which is lower than 0.0478.