Numerical and experimental generated data during project https://doi.org/10.1109/JIOT.2025.3588695

The dataset was generated during a project aimed at developing a massive multiple-input-multipleoutput (mMIMO) sub-array formed by a linear combination of four dielectric resonator antennas (DRAs) in a 1 × 4 linear array. The DRA array is fed by three separate unequal corporate power dividers (to reduce the side lobe level), resulting in a 3 × 3 MIMO array offering a three-fold increase in channel capacity as compared to the single port array. The proposed subarray can generate three high-gain beams independently steerable in the desired directions. The proposed array operates in the lower sub-6 GHz band with a measured impedance bandwidth of 900 MHz (3.0 GHz to 3.9 GHz). The three ports, P1, P2, and P3, provide a measured maximum gain of 8.2, 7.8, and 6.8 dBi, with -18 dB of side lobe level (SLL). The measured inter-port isolation is better than 15 dB for all the ports resulting in the achievement of the envelope correlation coefficients lower than 0.15 and diversity gain (DG) greater than 9.5 dB in the band of interest.