Abstract
A four-element compact wide-band optically transparent MIMO antenna with a full ground plane is proposed. The four elements transparent MIMO system has a compact size of 24 × 20 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> with the undivided ground plane as most of the real-time systems demand a common reference. The complete antenna system achieves around 85% transparency due to a combination of AgHT-8 and Plexiglas which forms the transparent conductive patch/ground and substrate, respectively. The antenna geometry leads dual-band operation ranging from 24.10 - 27.18 GHz (Impedance bandwidth = 12%) and 33 - 44.13 GHz (Impedance bandwidth =28.86$ %) targeting the mm-wave 5G applications. The 4-element antenna system achieves isolation between inter-elements >16 dB and maximum gain value of greater than 3 dBi with more than 75% efficiency. The proposed transparent MIMO antenna is evaluated in terms of diversity gain (DG), envelope correlation coefficient (ECC), total active reflection coefficient (TARC), and mean effective gain (MEG) where decent MIMO performance with isolation more than >16 dB between the adjacent and other elements is achieved. Transparent MIMO antenna achieves directional patterns for the operating band with the value of DG >9, ECC <; 0.1, TARC value less than -15dB, and the ratio of MEG within the agreed limit of ±3 dB confirming acceptable MIMO/diversity performance.
Highlights
The emergence of the 5G standard has established an enormous increase in the throughput of data where theoretically the channel capacity will be increased 1,000 times
Multiple-input multiple-output (MIMO) is one of the key technologies to enhance the performance of 5G technology
A MIMO antenna consisting of a meander dipole and parabolic reflector is proposed in [18] for extra isolation element, full ground plane, resonating in the mm-wave frequency band and satisfactory diversity parameters which makes the antenna suitable for smart devices using 5G mm-wave spectrum
Summary
The emergence of the 5G standard has established an enormous increase in the throughput of data where theoretically the channel capacity will be increased 1,000 times. A MIMO antenna consisting of a meander dipole and parabolic reflector is proposed in [18] for extra isolation element, full ground plane, resonating in the mm-wave frequency band and satisfactory diversity parameters which makes the antenna suitable for smart devices using 5G mm-wave spectrum.
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