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<p>This article presents a compact quad-port MIMO antenna for 5G NR mm-Wave applications. Initially, an ICE-POP structured single-element antenna is designed and then transformed into a four-port MIMO configuration. The proposed antenna provides an ultra-wide bandwidth of 23.5–45&#xa0;GHz (21.5&#xa0;GHz), covering the 5G NR bands n257, n258, n259, and n260. Fabricated on Rogers RT/Duroid 5880 with overall dimensions of 24 × 24 × 0.8&#xa0;mm³, the antenna incorporates a 3 × 3 circular-ring defected ground structure (DGS) to achieve isolation better than − 25 dB. It exhibits a peak gain of 6.75 dBi, radiation efficiency of 98%, and satisfactory MIMO performance in terms of ECC, DG, CCL, and TARC. The antenna was designed and analyzed using HFSS, followed by fabrication and experimental validation.</p>

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Quad Element Based MIMO Antenna for 5G (NR)- mm-Wave Applications

  • 期刊论文

  • 发表日期：

    2026年8月3日

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  • Amit Abhishek,
  • Priyadarshi Suraj,
  • Ritesh Kumar Badhai

摘要

This article presents a compact quad-port MIMO antenna for 5G NR mm-Wave applications. Initially, an ICE-POP structured single-element antenna is designed and then transformed into a four-port MIMO configuration. The proposed antenna provides an ultra-wide bandwidth of 23.5–45 GHz (21.5 GHz), covering the 5G NR bands n257, n258, n259, and n260. Fabricated on Rogers RT/Duroid 5880 with overall dimensions of 24 × 24 × 0.8 mm³, the antenna incorporates a 3 × 3 circular-ring defected ground structure (DGS) to achieve isolation better than − 25 dB. It exhibits a peak gain of 6.75 dBi, radiation efficiency of 98%, and satisfactory MIMO performance in terms of ECC, DG, CCL, and TARC. The antenna was designed and analyzed using HFSS, followed by fabrication and experimental validation.