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<p>A 6 × 6 MIMO antenna operating at 28&#xa0;GHz within the mmWave frequency range is presented. This MIMO antenna integrates a pair of stubs embedded in the microstrip feedline along with a circular disk etched with multiple semicircular rings. The MIMO antenna is constructed utilizing Roger RT/Duroid 6002, with overall dimensions of 36 × 52.5 × 1.52&#xa0;mm³. Further, a modified ground plane is incorporated to enhance the isolation &gt; 23dB between different radiating element combinations throughout the whole operational band. The designed antenna effectively covers the 26.6–28.9&#xa0;GHz millimeter-wave frequency band. Moreover, key MIMO diversity metrics are examined for the proposed antenna. Within the useable spectrum, the MIMO antenna’s envelope correlation coefficient and channel capacity loss are found to be &lt; 0.0091 and &lt; 0.3, respectively. The 6-port MIMO antenna channel capacity is found over three times greater than that of the 2-port MIMO design. The fabricated MIMO antenna results compare well with the simulated data obtained from CST Microwave Studio and this antenna is well-suited for mmWave 5G communication systems.</p>

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Compact 28 GHz MIMO antenna with six-port architecture for high-speed 5G communication

  • 期刊论文

  • 发表日期：

    2026年1月21日

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  • Preeti Sharma,
  • Rakesh N. Tiwari,
  • Prabhakar Singh

摘要

A 6 × 6 MIMO antenna operating at 28 GHz within the mmWave frequency range is presented. This MIMO antenna integrates a pair of stubs embedded in the microstrip feedline along with a circular disk etched with multiple semicircular rings. The MIMO antenna is constructed utilizing Roger RT/Duroid 6002, with overall dimensions of 36 × 52.5 × 1.52 mm³. Further, a modified ground plane is incorporated to enhance the isolation > 23dB between different radiating element combinations throughout the whole operational band. The designed antenna effectively covers the 26.6–28.9 GHz millimeter-wave frequency band. Moreover, key MIMO diversity metrics are examined for the proposed antenna. Within the useable spectrum, the MIMO antenna’s envelope correlation coefficient and channel capacity loss are found to be < 0.0091 and < 0.3, respectively. The 6-port MIMO antenna channel capacity is found over three times greater than that of the 2-port MIMO design. The fabricated MIMO antenna results compare well with the simulated data obtained from CST Microwave Studio and this antenna is well-suited for mmWave 5G communication systems.