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<p>This work develops a compact microstrip patch antenna (MPA) for Wi-Fi 5/6 WLAN applications operating at 5.5&#xa0;GHz. It emphasizes enhancing impedance matching, bandwidth, and radiation properties while maintaining a low-profile design. The antenna incorporates a slot-modified radiating patch and a U-shaped defective ground structure (DGS) to enhance performance. We employed CST Microwave Studio for full-wave simulations and utilized an RLC circuit model in ADS to verify the antenna’s resonant characteristics. The results indicated a reflection coefficient of − 54.3&#xa0;dB at 5.5&#xa0;GHz and an impedance bandwidth of 126&#xa0;MHz. The antenna had a maximum realized gain of 6.48 dBi, a directivity of 7.02 dBi, and an overall efficiency of 88.4%. In comparison to alternative designs, this one exhibited superior return loss, gain, efficiency, and radiation pattern. This study presents a high-performance antenna solution that addresses common limitations of conventional MPAs, showcasing a small and efficient design suitable for Wi-Fi 5/6 applications and enhancing the development of advanced WLAN systems with superior communication capabilities.</p>

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Compact U-slot microstrip antenna for Wi-Fi 5/6: enhancing gain, bandwidth, and efficiency

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月9日

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  • Maria Sultana,
  • S. M. Abu Zahed Chowdhury,
  • Mohammad Abdul Alim

摘要

This work develops a compact microstrip patch antenna (MPA) for Wi-Fi 5/6 WLAN applications operating at 5.5 GHz. It emphasizes enhancing impedance matching, bandwidth, and radiation properties while maintaining a low-profile design. The antenna incorporates a slot-modified radiating patch and a U-shaped defective ground structure (DGS) to enhance performance. We employed CST Microwave Studio for full-wave simulations and utilized an RLC circuit model in ADS to verify the antenna’s resonant characteristics. The results indicated a reflection coefficient of − 54.3 dB at 5.5 GHz and an impedance bandwidth of 126 MHz. The antenna had a maximum realized gain of 6.48 dBi, a directivity of 7.02 dBi, and an overall efficiency of 88.4%. In comparison to alternative designs, this one exhibited superior return loss, gain, efficiency, and radiation pattern. This study presents a high-performance antenna solution that addresses common limitations of conventional MPAs, showcasing a small and efficient design suitable for Wi-Fi 5/6 applications and enhancing the development of advanced WLAN systems with superior communication capabilities.