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<p>In this article, a novel, high-gain, compact, and self-isolated S-shaped dual-wideband MIMO antenna system is presented. In the proposed structure, the pentagonal shape of the antenna is modified to a novel S-shaped antenna by cutting two horizontal slits, which achieves a broader bandwidth, higher gain, improved isolation, and a lower envelope correlation coefficient. The proposed design is compact 56 × 37 × 1.6mm<sup>3</sup> due to the absence of any additional isolation element. The proposed antenna operates on two wide bands between frequency ranges of 0.584—1&#xa0;GHz, which finds its applications for 750, 850, and 900 GSM bands, while the other wideband covers the range of 3.24–4.32&#xa0;GHz applicable for WLAN, 5G, and sub-6&#xa0;GHz wireless applications. The isolation loss between both antenna elements is 31&#xa0;dB in the first operating band and 20&#xa0;dB in the second operating band. Several diversity parameters are also verified to analyze the MIMO performance of the proposed antenna, like envelope correlation coefficient (ECC &lt; 0.015), diversity gain (DG &gt; 9.85), TARC (&lt; –15&#xa0;dB), and CCL (&lt; 0.35 bits/s/Hz) across both operating bands, indicating excellent impedance matching and high diversity performance. The proposed&#xa0;antenna is fabricated and successfully tested experimentally to verify the findings.</p>

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High Gain, Self Isolated S-shaped Dual Wideband MIMO Antenna for 5G Wireless Applications

  • 期刊论文

  • 发表日期：

    2026年1月13日

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  • Sonu Rana,
  • Lalit Kumar,
  • Anil Kumar Gautam,
  • Sonia Sharma,
  • Rahul Rishi

摘要

In this article, a novel, high-gain, compact, and self-isolated S-shaped dual-wideband MIMO antenna system is presented. In the proposed structure, the pentagonal shape of the antenna is modified to a novel S-shaped antenna by cutting two horizontal slits, which achieves a broader bandwidth, higher gain, improved isolation, and a lower envelope correlation coefficient. The proposed design is compact 56 × 37 × 1.6mm3 due to the absence of any additional isolation element. The proposed antenna operates on two wide bands between frequency ranges of 0.584—1 GHz, which finds its applications for 750, 850, and 900 GSM bands, while the other wideband covers the range of 3.24–4.32 GHz applicable for WLAN, 5G, and sub-6 GHz wireless applications. The isolation loss between both antenna elements is 31 dB in the first operating band and 20 dB in the second operating band. Several diversity parameters are also verified to analyze the MIMO performance of the proposed antenna, like envelope correlation coefficient (ECC < 0.015), diversity gain (DG > 9.85), TARC (< –15 dB), and CCL (< 0.35 bits/s/Hz) across both operating bands, indicating excellent impedance matching and high diversity performance. The proposed antenna is fabricated and successfully tested experimentally to verify the findings.