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<p>This manuscript presents a 4-element (40 × 40 mm<sup>2</sup>) and 8-element (80 × 80 mm<sup>2</sup>) Multiple-Input Multiple-Output (MIMO) antenna designed for 5th generation technology within the sub-6&#xa0;GHz frequency range. Each element of the MIMO antenna, which comprises a perturbed pentagon rectangular-cut antenna, is arranged in an orthogonal configuration on a single substrate. To ensure optimal performance, a circular ring-like strip is added on the pentagon-shaped patch. The novel printed sub-6&#xa0;GHz antenna is fed by a microstrip line. Parallel strips (4-element) and corner isolating strips on the ground plane (8-element) are the key segments that improve isolation. The unique MIMO antenna design contributes to the desired return loss and isolation characteristics. The achieved parameters for the designed antenna; Envelope Correlation Coefficient (ECC) &lt; 0.002, Diversity Gain (DG) ≈9.99&#xa0;dB and Channel Capacity Loss (CCL) &lt; 0.1bps/ Hz, show acceptable MIMO performance. This design will support large-scale IoT utilization with better dependability and data throughput.</p>

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Performance characterization of compact pentagon-based 4 × 4 and 8 × 8 MIMO antennas

  • 期刊论文

  • 发表日期：

    2025年9月27日

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  • Shibani Tripathy,
  • Diptimayee Konhar,
  • Ananda Kumar Behera

摘要

This manuscript presents a 4-element (40 × 40 mm2) and 8-element (80 × 80 mm2) Multiple-Input Multiple-Output (MIMO) antenna designed for 5th generation technology within the sub-6 GHz frequency range. Each element of the MIMO antenna, which comprises a perturbed pentagon rectangular-cut antenna, is arranged in an orthogonal configuration on a single substrate. To ensure optimal performance, a circular ring-like strip is added on the pentagon-shaped patch. The novel printed sub-6 GHz antenna is fed by a microstrip line. Parallel strips (4-element) and corner isolating strips on the ground plane (8-element) are the key segments that improve isolation. The unique MIMO antenna design contributes to the desired return loss and isolation characteristics. The achieved parameters for the designed antenna; Envelope Correlation Coefficient (ECC) < 0.002, Diversity Gain (DG) ≈9.99 dB and Channel Capacity Loss (CCL) < 0.1bps/ Hz, show acceptable MIMO performance. This design will support large-scale IoT utilization with better dependability and data throughput.