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<p>The purpose of the article is to provide insight into a dual band integrable antenna system with multiple input multiple output (MIMO) intended for wireless and industrial, scientific and medical (ISM) band applications. The recommended antenna is made up of two radiating elements and has an overall dimension of 50 × 25 mm<sup>2</sup>. A simple T-shaped defect in the underground plane optimizes the isolation (around &lt; -45 dB) which operate at 3.74&#xa0;GHz and 5.8&#xa0;GHz. The simulated impedance bandwidths are 550&#xa0;MHz (3.52–4.07&#xa0;GHz) and 400&#xa0;MHz (5.63–6.03&#xa0;GHz) with a voltage standing wave ratio (VSWR) ≤ 2, indicating good impedance matching. In terms of diversity performance, the proposed structure has a relatively small envelope correlation coefficient (ECC) &lt; 0.0004 and an acceptable diversity gain (DG) of 9.99 dB value. The channel capacity loss (CCL) &lt; 0.5 bps/Hz, total active reflection coefficient (TARC) &lt; 0 dB, and mean effective gain (MEG) of -3 dB are firmly within the permissible value limits. The results of the simulation and the measurement accord well with each other.</p>

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An integrable high isolation MIMO antenna for wireless and ISM band applications: design and evaluation

  • 期刊论文

  • 发表日期：

    2025年7月9日

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  • Makkapati Himaja,
  • S. Yuvaraj,
  • P. Kishore Kumar

摘要

The purpose of the article is to provide insight into a dual band integrable antenna system with multiple input multiple output (MIMO) intended for wireless and industrial, scientific and medical (ISM) band applications. The recommended antenna is made up of two radiating elements and has an overall dimension of 50 × 25 mm2. A simple T-shaped defect in the underground plane optimizes the isolation (around < -45 dB) which operate at 3.74 GHz and 5.8 GHz. The simulated impedance bandwidths are 550 MHz (3.52–4.07 GHz) and 400 MHz (5.63–6.03 GHz) with a voltage standing wave ratio (VSWR) ≤ 2, indicating good impedance matching. In terms of diversity performance, the proposed structure has a relatively small envelope correlation coefficient (ECC) < 0.0004 and an acceptable diversity gain (DG) of 9.99 dB value. The channel capacity loss (CCL) < 0.5 bps/Hz, total active reflection coefficient (TARC) < 0 dB, and mean effective gain (MEG) of -3 dB are firmly within the permissible value limits. The results of the simulation and the measurement accord well with each other.