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This study introduces the design and performance evaluation of a Miniature 4 × 4 MIMO antenna specifically optimized for millimeter-wave 5G applications. The proposed antenna is miniaturized, incorporating four circular cuts at the edges, and a slit in the ground plane to improve impedance matching, optimize decoupling, and overall radiation performance. The MIMO system is fabricated on a substrate measuring 12 × 12 × 0.8 mm3, rendering it highly adaptable for seamless integration into contemporary 5G communication devices. The antenna functions supporting frequencies from 25.62 to 31.72 GHz, encompassing essential mm Wave 5G bands such as n257 (26.5–29.5 GHz), n258 (24.25–27.5 GHz), and n261 (27.5–28.35 GHz). Performance evaluations demonstrate a gain of 4.6 dB at 28 GHz, exhibiting an ECC of 0.0001 and a DG of 9.99, indicating excellent MIMO capabilities. The low ECC value ensures minimal mutual coupling and strong spatial diversity, which are critical to enable high-speed data transmission and reliable connectivity in 5G networks. The proposed antenna design successfully integrates miniaturization, wide frequency range, and high isolation, depicting it as a strong contender for next-generation wireless communication applications.

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A Miniaturized Broadband 4 × 4 MIMO Antenna for High-Performance Millimeter-Wave 5G Communication

  • 会议论文

  • 发表日期：

    2026年

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  • Omaima Benkhadda,
  • Abdelati Reha,
  • Mohamed Saih,
  • Meryama Harrou,
  • Amal Aarab

摘要

This study introduces the design and performance evaluation of a Miniature 4 × 4 MIMO antenna specifically optimized for millimeter-wave 5G applications. The proposed antenna is miniaturized, incorporating four circular cuts at the edges, and a slit in the ground plane to improve impedance matching, optimize decoupling, and overall radiation performance. The MIMO system is fabricated on a substrate measuring 12 × 12 × 0.8 mm3, rendering it highly adaptable for seamless integration into contemporary 5G communication devices. The antenna functions supporting frequencies from 25.62 to 31.72 GHz, encompassing essential mm Wave 5G bands such as n257 (26.5–29.5 GHz), n258 (24.25–27.5 GHz), and n261 (27.5–28.35 GHz). Performance evaluations demonstrate a gain of 4.6 dB at 28 GHz, exhibiting an ECC of 0.0001 and a DG of 9.99, indicating excellent MIMO capabilities. The low ECC value ensures minimal mutual coupling and strong spatial diversity, which are critical to enable high-speed data transmission and reliable connectivity in 5G networks. The proposed antenna design successfully integrates miniaturization, wide frequency range, and high isolation, depicting it as a strong contender for next-generation wireless communication applications.