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This paper presents the design, simulation, and analysis of a compact dual-band microstrip patch antenna for 5G and IoT systems. The antenna structure, realized on a single layer FR-4 substrate, with a central slot and lateral parasitic strip to enable dual-band operation at 3.5 GHz and 5.8 GHz. The design achieves broad bandwidths of 143,46 MHz and 240,54 MHz, respectively, with simulated return losses of −26.036 dB and -27.264 dB and VSWR values close to unity on both bands (1,1031 and 1,0906 respectively). The radiation efficiency remains above 40%. Comparative analysis with state-of-the-art antennas demonstrates that the proposed structure achieves competitive performance while maintaining simplicity, manufacturability, and PCB integration. These results validate the use of slot parasitic coupling for practical dual-band wireless devices.

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Compact Dual-Band Microstrip Antenna Design for 5G and IoT Applications Using Slot and Parasitic Coupling

  • 会议论文

  • 发表日期：

    2026年

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  • Ayoub Benhamou,
  • Yassine Mesbahi,
  • Sanae Habibi,
  • Seddik Bri,
  • Mohamed Habibi,
  • Omar Mouhib

摘要

This paper presents the design, simulation, and analysis of a compact dual-band microstrip patch antenna for 5G and IoT systems. The antenna structure, realized on a single layer FR-4 substrate, with a central slot and lateral parasitic strip to enable dual-band operation at 3.5 GHz and 5.8 GHz. The design achieves broad bandwidths of 143,46 MHz and 240,54 MHz, respectively, with simulated return losses of −26.036 dB and -27.264 dB and VSWR values close to unity on both bands (1,1031 and 1,0906 respectively). The radiation efficiency remains above 40%. Comparative analysis with state-of-the-art antennas demonstrates that the proposed structure achieves competitive performance while maintaining simplicity, manufacturability, and PCB integration. These results validate the use of slot parasitic coupling for practical dual-band wireless devices.