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This research article proposes a flower-shaped filtering antenna composed of a multi-mode resonator (MMR)-based band-pass filter (BPF). The objective of this research is to operate a UWB antenna in the sub-6 GHz 5G band only. The proposed filtering antenna geometry has a volume of 60  × 30 × 1.524 mm3. The antenna without the filter offers a bandwidth of 3–10 GHz. The MMR-based BPF developed in this research has a 2.9–6.1 GHz passband. Then they are integrated together to act as the antenna to offer a mid-5G band (3–6.1 GHz). All the proposed design is developed on Rogers 4350 substrate. The said filtering antenna resonates at 4.06 GHz with a fractal bandwidth of 76.355%. The overall gain of the antenna is ranging between 1.5 and 5.1 dB with a reasonably high radiation efficiency of around 55–89%. The simulation and designing of the proposed antenna are performed in HFSS 21.0v software environment.

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A Mid-Band 5G Filtering Antenna with a Round Slot in a Flower-Like Patch and an MMR-Based BPF

  • 会议论文

  • 发表日期：

    2026年

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  • Atanu Chowdhury,
  • Prashant Ranjan

摘要

This research article proposes a flower-shaped filtering antenna composed of a multi-mode resonator (MMR)-based band-pass filter (BPF). The objective of this research is to operate a UWB antenna in the sub-6 GHz 5G band only. The proposed filtering antenna geometry has a volume of 60  × 30 × 1.524 mm3. The antenna without the filter offers a bandwidth of 3–10 GHz. The MMR-based BPF developed in this research has a 2.9–6.1 GHz passband. Then they are integrated together to act as the antenna to offer a mid-5G band (3–6.1 GHz). All the proposed design is developed on Rogers 4350 substrate. The said filtering antenna resonates at 4.06 GHz with a fractal bandwidth of 76.355%. The overall gain of the antenna is ranging between 1.5 and 5.1 dB with a reasonably high radiation efficiency of around 55–89%. The simulation and designing of the proposed antenna are performed in HFSS 21.0v software environment.