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<p>This study introduces an innovative technique aimed at reducing mutual coupling between two Linear polarization Magneto-Electric Dipole Antennas operating in the sub-6&#xa0;GHz frequency band for 5G applications. The method encompasses the strategic placement of a metasurface between the two antennas, positioned in the XoZ-plane. The metasurface is composed of an array of Split Ring Resonator Wall (SRRW) cells, specifically designed along the YoZ-plane to create a stop band effect within the operating bandwidth of the antennas. By integrating a 1 × 5 array of SRRW cells, a substantial reduction of 28&#xa0;dB in mutual coupling is attained, without jeopardizing the performance of the antennas. Experimental results confirm that the prototype antenna achieves isolation levels between − 30 and − 50&#xa0;dB across the 2–4&#xa0;GHz frequency range. The SRRW structure does not affect the impedance bandwidth (IBW), yet contributes to slight enhancements in the front-to-back ratio and radiation gain.</p>

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Mutual Coupling Reduction in Magneto Electric Dipole Antennas Using SRRW Metasurface Wall for 5G MIMO Systems

  • 期刊论文

  • 发表日期：

    2025年9月4日

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  • Mohammad Hossein Ashouri,
  • Pejman Rezaei

摘要

This study introduces an innovative technique aimed at reducing mutual coupling between two Linear polarization Magneto-Electric Dipole Antennas operating in the sub-6 GHz frequency band for 5G applications. The method encompasses the strategic placement of a metasurface between the two antennas, positioned in the XoZ-plane. The metasurface is composed of an array of Split Ring Resonator Wall (SRRW) cells, specifically designed along the YoZ-plane to create a stop band effect within the operating bandwidth of the antennas. By integrating a 1 × 5 array of SRRW cells, a substantial reduction of 28 dB in mutual coupling is attained, without jeopardizing the performance of the antennas. Experimental results confirm that the prototype antenna achieves isolation levels between − 30 and − 50 dB across the 2–4 GHz frequency range. The SRRW structure does not affect the impedance bandwidth (IBW), yet contributes to slight enhancements in the front-to-back ratio and radiation gain.