A two element planar MIMO array for UWB applications

What is it about?

In this article, a planar monopole two element multiple input multiple output (MIMO) array has been designed and characterized with the intension for ultra wide band (UWB) applications. The array has a VSWR (< 2) working bandwidth (BW) of 13.258 GHz between 3.394-16.652 GHz, with a fractional bandwidth (FBW) of 132.28% with respect to a center frequency of 10.023 GHz. The two elements of the MIMO array are 900 polarization mismatched for better isolation. Consequently, a less than -20 dB isolation has been achieved throughout the entire BW. Also, a good combined realized peak gain up to 5.85 dBi and total efficiency of greater than 85% has been observed. For MIMO performance key parameters, the array exhibits, the envelope correlation coefficient (ECC) < 0.0033, diversity gain (DG) > 9.983, total active reflection coefficient (TARC) < 0.445, mean effective gain difference (MEG12) ≈ 0 dB and the channel capacity loss (CCL) < 0.4 bps/Hz. This design would motivate the design engineers to produce high performance MIMO antennas for the UWB frequency related applications.

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Why is it important?

. For MIMO performance key parameters, the array exhibits, the envelope correlation coefficient (ECC) < 0.0033, diversity gain (DG) > 9.983, total active reflection coefficient (TARC) < 0.445, mean effective gain difference (MEG12) ≈ 0 dB and the channel capacity loss (CCL) < 0.4 bps/Hz. This design would motivate the design engineers to produce high performance MIMO antennas for the UWB frequency related applications.