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This chapter emphasizes fractal-based antennas, which possess multiband and miniaturization properties. Recent developments in wireless technology and telecommunications necessitate the use of compact, multiband antennas with simplified systems. This work employs a new model of slotted antenna with rectangular slits and a Sierpinski fractal geometry. The fractal antenna with Bowtie-shaped arms is further enlarged up to two iterations. The proposed second-order SPK Bowtie antenna has an overall volume of (50 × 50 × 1.6) mm3 and an FR-4 epoxy substrate with a 4.4 dielectric constant. The proposed antenna is simulated for the 100 MHz–14 GHz frequency range using ANSYS HFSS software. All zeroth, first, and second iteration orders of the antenna are excited with coaxial probe feed. The evaluation and comparison of radiation standards include return loss, bandwidth, VSWR, and gain. The proposed iteration-2 SPKBT antenna possesses six bands (0.1–0.3 GHz), (3.4–3.6 GHz), (6.2–6.4 GHz), (8.4–8.9 GHz), (10.5–11.3 GHz), and (11.2–12.0 GHz) with S11 < -10 dB and VSWR<2. The resonant bands are useful for S, C, and X bands especially for radar, satellite communications, and military communications.

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A Rectangular Slotted Sierpinski Fractal Bowtie Antenna for Multiband Wireless Communications

  • 会议论文

  • 发表日期：

    2025年

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  • G. Ramalakshmi,
  • M. Shilpa Raj

摘要

This chapter emphasizes fractal-based antennas, which possess multiband and miniaturization properties. Recent developments in wireless technology and telecommunications necessitate the use of compact, multiband antennas with simplified systems. This work employs a new model of slotted antenna with rectangular slits and a Sierpinski fractal geometry. The fractal antenna with Bowtie-shaped arms is further enlarged up to two iterations. The proposed second-order SPK Bowtie antenna has an overall volume of (50 × 50 × 1.6) mm3 and an FR-4 epoxy substrate with a 4.4 dielectric constant. The proposed antenna is simulated for the 100 MHz–14 GHz frequency range using ANSYS HFSS software. All zeroth, first, and second iteration orders of the antenna are excited with coaxial probe feed. The evaluation and comparison of radiation standards include return loss, bandwidth, VSWR, and gain. The proposed iteration-2 SPKBT antenna possesses six bands (0.1–0.3 GHz), (3.4–3.6 GHz), (6.2–6.4 GHz), (8.4–8.9 GHz), (10.5–11.3 GHz), and (11.2–12.0 GHz) with S11 < -10 dB and VSWR<2. The resonant bands are useful for S, C, and X bands especially for radar, satellite communications, and military communications.