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<p>This article reported a novel two-port wideband Multiple-Input Multiple-Output (MIMO) antenna printed on FR4 substrate with a compact size (35<b> × </b>22 mm<sup>2</sup>) that can be used for Worldwide Interoperability for Microwave Access (WiMAX), Sub-6&#xa0;GHz: N77/N78/N79, Wireless Local Area Network (WLAN), and downlink satellite communication. A unique floral slotted patch is attached to a tapered feed on top and a rectangular stub carved into the partial ground forms the bottom plane of substrate. The proposed 2-port MIMO antenna operates within the 3.32–7.72&#xa0;GHz frequency range, making it compatible with various wireless communication standards, including WiMAX (3.3–3.6&#xa0;GHz), sub-6&#xa0;GHz bands (N77: 3.3–4.2&#xa0;GHz, N78: 3.3–3.8&#xa0;GHz, N79: 4.4–5&#xa0;GHz), WLAN (5.15–5.825&#xa0;GHz), and the downlink satellite band (7.25–7.75&#xa0;GHz). The integration of a rectangular stub with a defected ground structure (DGS) enhances its diversity performance, achieving an envelope correlation coefficient (ECC) &lt; 0.002, a diversity gain (DG)≈10, a total active reflection coefficient (TARC) &lt; − 10&#xa0;dB, a channel capacity loss (CCL) &lt; 0.1 bits/s/Hz, and a mean effective gain (MEG) &lt; − 3.01&#xa0;dB. These characteristics make it an excellent choice for 5G Sub-6&#xa0;GHz applications.</p>

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A novel compact MIMO antenna for WiMAX, sub-6 GHz: N77/N78/N79, WLAN and satellite communication applications

  • 期刊论文

  • 发表日期：

    2025年11月5日

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  • C. Peter Devadoss,
  • A. Beno,
  • V. N. Koteswara Rao Devana,
  • A. Vijaya Lakshmi,
  • V. L. N. Phani Ponnapalli,
  • K. S. Chakradhar,
  • Savanam Chandra Sekhar,
  • P. Vijay Kumar

摘要

This article reported a novel two-port wideband Multiple-Input Multiple-Output (MIMO) antenna printed on FR4 substrate with a compact size (35 × 22 mm2) that can be used for Worldwide Interoperability for Microwave Access (WiMAX), Sub-6 GHz: N77/N78/N79, Wireless Local Area Network (WLAN), and downlink satellite communication. A unique floral slotted patch is attached to a tapered feed on top and a rectangular stub carved into the partial ground forms the bottom plane of substrate. The proposed 2-port MIMO antenna operates within the 3.32–7.72 GHz frequency range, making it compatible with various wireless communication standards, including WiMAX (3.3–3.6 GHz), sub-6 GHz bands (N77: 3.3–4.2 GHz, N78: 3.3–3.8 GHz, N79: 4.4–5 GHz), WLAN (5.15–5.825 GHz), and the downlink satellite band (7.25–7.75 GHz). The integration of a rectangular stub with a defected ground structure (DGS) enhances its diversity performance, achieving an envelope correlation coefficient (ECC) < 0.002, a diversity gain (DG)≈10, a total active reflection coefficient (TARC) < − 10 dB, a channel capacity loss (CCL) < 0.1 bits/s/Hz, and a mean effective gain (MEG) < − 3.01 dB. These characteristics make it an excellent choice for 5G Sub-6 GHz applications.