An Annular Shaped Two-Port MIMO Antenna For Ultra Wide Band Frequency Range Applications

This paper contemplates the designing of a compact two-port MIMO antenna for ultra-wideband frequency range applications. This paper introduces the concept of partial ground which eventually helps in achieving wider frequency bandwidth. The proposed MIMO antenna is designed over a substrate called FR4 epoxy. The patch located in the ground plane was fabricated using copper. The proposed MIMO antenna dimensions are 24mm×24mm×1.6mm. Patch placed at the top of the antenna is created by placing circular slots which eventually lead to steady current and higher reflection coefficient. The antenna achieves a reflection coefficient of −42.62 dB at the resonating frequency of 8.6 GHz. The antenna achieves the −10dB bandwidth ranging from 3 GHz to 12 GHz which covers the whole unlicensed ultra-wideband frequency range. The antenna achieves a maximum gain of 2.6 dBi at 10.6 GHz. Radiation efficiency of the antenna is 95.21%. This work concludes the designing of a two-port antenna that can attain a higher reflection coefficient with a wider bandwidth. The antenna can achieve these purposes with the help of annular patches and partial ground.