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<p>A novel cross-slot antenna is presented for superficial hyperthermia applications within the 2.45&#xa0;GHz ISM band. The design achieves an operating frequency of 2.45&#xa0;GHz through optimal placement of a 50-Ω coaxial feed, resulting in a reflection coefficient of –20.08&#xa0;dB. The innovative cross-slot structure combined with trimmed patch corners produces a compact antenna with dimensions of 50 × 50 × 1.6 mm<sup>3</sup>, significantly reducing size while maintaining robust frequency performance. With an input power of 3.9 mW, the specific absorption rate (SAR) is calculated as 404.15 W/kg. The antenna exhibits a directive radiation pattern with a gain of – 5.1&#xa0;dB. Both simulated and measured results are in strong agreement, demonstrating that the proposed design offers superior performance compared to existing solutions and holds great promise for effective hyperthermia treatment.</p>

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Designed and development of 2.45 GHz cross-slot microstrip patch antenna for empowering hyperthermia treatments

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年6月17日

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  • Azharuddin Khan,
  • Satya Kesh Dubey,
  • Amit Kumar Singh

摘要

A novel cross-slot antenna is presented for superficial hyperthermia applications within the 2.45 GHz ISM band. The design achieves an operating frequency of 2.45 GHz through optimal placement of a 50-Ω coaxial feed, resulting in a reflection coefficient of –20.08 dB. The innovative cross-slot structure combined with trimmed patch corners produces a compact antenna with dimensions of 50 × 50 × 1.6 mm3, significantly reducing size while maintaining robust frequency performance. With an input power of 3.9 mW, the specific absorption rate (SAR) is calculated as 404.15 W/kg. The antenna exhibits a directive radiation pattern with a gain of – 5.1 dB. Both simulated and measured results are in strong agreement, demonstrating that the proposed design offers superior performance compared to existing solutions and holds great promise for effective hyperthermia treatment.