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A compact dual-frequency microstrip patch antenna intended for Wi-Fi and WLAN application is designed and analyzed in this work. The antenna operates in 2.4 GHz and upper Wi-Fi frequency bands, where dual-band behavior is achieved by employing magnetic coupling between a driven patch and a closely placed parasitic element. The suggested antenna configuration is fabricated using a low-cost FR-4 substrate using a via-fed excitation technique making it suitable for compact and low-profile wireless devices. Shorting vias are incorporated to regulate surface current flow and enhanced impedance matching at the operating frequencies. The antenna configuration is modeled and analyzed with CST Studio Suite to analyze reflection coefficient, VSWR, field distributions and radiation characteristics. Simulation results indicate satisfactory impedance matching, stable radiation performance, and compact dimensions, confirming the practically of the proposed antenna for real-world Wi-Fi applications.

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Design and Performance Analysis of a Compact Magnetically Coupled Dual-Band Microstrip Patch Antenna for Wi-Fi Applications

  • 会议论文

  • 发表日期：

    2026年

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  • V. S. Prasanth,
  • P. Akhileshwari,
  • T. Harika,
  • P. Jasmine Sunalini,
  • A. Parveen Akhther

摘要

A compact dual-frequency microstrip patch antenna intended for Wi-Fi and WLAN application is designed and analyzed in this work. The antenna operates in 2.4 GHz and upper Wi-Fi frequency bands, where dual-band behavior is achieved by employing magnetic coupling between a driven patch and a closely placed parasitic element. The suggested antenna configuration is fabricated using a low-cost FR-4 substrate using a via-fed excitation technique making it suitable for compact and low-profile wireless devices. Shorting vias are incorporated to regulate surface current flow and enhanced impedance matching at the operating frequencies. The antenna configuration is modeled and analyzed with CST Studio Suite to analyze reflection coefficient, VSWR, field distributions and radiation characteristics. Simulation results indicate satisfactory impedance matching, stable radiation performance, and compact dimensions, confirming the practically of the proposed antenna for real-world Wi-Fi applications.