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This article proposes a novel reconfigurable fractal antenna design for multiband applications. The antenna consists of a fork-shaped patch with a Cantor set fractal slot. The antenna operates as a frequency-reconfigurable device by integrating 4 PIN diodes inside the fractal radiating element. The band of the antenna design functions at the 2.7–6.9 GHz band. A 2nd-order Cantor set fractal is employed along the upper edges of the radiator. The proposed antenna is designed using a numerical technique called the Finite Element Method (FEM) and also placed on a FR-4 substrate. The peak realized gain of the antenna is 4.8 dBi across the overall band. The miniaturized dimension of the proposed design (30 × 24 × 1.6 mm3), acceptable values of gain, efficiency, Cross-Polar discrimination (XPD) greater than 15 dB, and low profile, make the linearly polarized reconfigurable fractal antenna suitable for wideband applications.

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Design of Wideband Antenna with Frequency Reconfigurable Using Fractal Structures

  • 会议论文

  • 发表日期：

    2025年

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  • Khushbu Patel,
  • Santanu Kumar Behera

摘要

This article proposes a novel reconfigurable fractal antenna design for multiband applications. The antenna consists of a fork-shaped patch with a Cantor set fractal slot. The antenna operates as a frequency-reconfigurable device by integrating 4 PIN diodes inside the fractal radiating element. The band of the antenna design functions at the 2.7–6.9 GHz band. A 2nd-order Cantor set fractal is employed along the upper edges of the radiator. The proposed antenna is designed using a numerical technique called the Finite Element Method (FEM) and also placed on a FR-4 substrate. The peak realized gain of the antenna is 4.8 dBi across the overall band. The miniaturized dimension of the proposed design (30 × 24 × 1.6 mm3), acceptable values of gain, efficiency, Cross-Polar discrimination (XPD) greater than 15 dB, and low profile, make the linearly polarized reconfigurable fractal antenna suitable for wideband applications.