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<p>This article introduces a compact dual-band, 4-port Multiple Input Multiple Output (MIMO) antenna designed for 5G millimeter-Wave (mm-Wave) communication. The proposed antenna consists of a circular ring featuring a slot and two stubs that facilitate dual-band response with an extensive bandwidth at 28/38&#xa0;GHz. A single-element antenna, a 2-port MIMO antenna with various configurations, and a 4-port MIMO antenna are developed and analyzed. The antenna is printed on 0.508-mm-thick Rogers RT duroid with a relative permittivity of 2.2. It has a compact dimension of 16 × 16 mm<sup>2</sup>. The MIMO system has four symmetric radiators organized orthogonally, achieving an isolation of ≥  − 20&#xa0;dB and ≥  − 25&#xa0;dB at both resonant frequencies. The suggested system can accommodate both 28/38 5G bands and possesses advantages such as extensive bandwidth, a low profile, high gain of around 8 and 9.5 dBi at 28/38&#xa0;GHz bands, a low envelope correlation coefficient ECC ≤ 0.0001, little channel capacity loss CCL &lt; 0.05, and significant diversity gain DG &gt; 9.99. The system’s performance is experimentally validated, demonstrating strong concordance between the simulated and observed data. These qualities highlight the system’s applicability for 5G mm-Wave communication.</p>

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Design and Analysis of Compact Dual Band 4-Port MIMO Antenna for 5G 28/38 GHz Millimeter-Wave Communication

  • 期刊论文

  • 发表日期：

    2025年8月22日

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  • Sudharani Chidurala,
  • Prakasa Rao Amara

摘要

This article introduces a compact dual-band, 4-port Multiple Input Multiple Output (MIMO) antenna designed for 5G millimeter-Wave (mm-Wave) communication. The proposed antenna consists of a circular ring featuring a slot and two stubs that facilitate dual-band response with an extensive bandwidth at 28/38 GHz. A single-element antenna, a 2-port MIMO antenna with various configurations, and a 4-port MIMO antenna are developed and analyzed. The antenna is printed on 0.508-mm-thick Rogers RT duroid with a relative permittivity of 2.2. It has a compact dimension of 16 × 16 mm2. The MIMO system has four symmetric radiators organized orthogonally, achieving an isolation of ≥  − 20 dB and ≥  − 25 dB at both resonant frequencies. The suggested system can accommodate both 28/38 5G bands and possesses advantages such as extensive bandwidth, a low profile, high gain of around 8 and 9.5 dBi at 28/38 GHz bands, a low envelope correlation coefficient ECC ≤ 0.0001, little channel capacity loss CCL < 0.05, and significant diversity gain DG > 9.99. The system’s performance is experimentally validated, demonstrating strong concordance between the simulated and observed data. These qualities highlight the system’s applicability for 5G mm-Wave communication.