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A monopole antenna consisting of meander line radiating strips at the medical implant communication (MIC) frequency band (402–405 MHz) is presented. The proposed antenna has an overall volume of 4160 mm3 (40 mm × 65 mm × 1.6 mm) which is designed on an FR4 substrate with shorting pins along the substrate length to achieve miniaturization. The antenna specific absorption rate (SAR) is simulated by implanting the antenna on the top surface and within the three-layered human body model with a typical input power of 1 mW. The average 10 g SAR of the antenna at the skin, fat and muscle are 0.1737, 0.00024, 0.0000256 W/Kg and 0.0217, 0.0179 and 0.09166 W/Kg, respectively, when the antenna was implanted at the top and underneath the skin. A prototype of the antenna was fabricated and measurement is performed to validate the simulation results. The measured −10 dB impedance bandwidth of 8 MHz between 400 and 408 MHz covering MIC frequency band has been realized with maximum gain of −1.6 dB. The omnidirectional radiation characteristics and permissible SAR value makes the proposed antenna a suitable candidate for implantable biotelemetry applications.

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Design of a 402–405 MHz Implantable Monopole Antenna at Medical Implant Communication Band for Bio Telemetry Applications

  • 会议论文

  • 发表日期：

    2025年

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  • Harikrishna Paik,
  • M. Shirisha,
  • A. Mounica,
  • M. Uday Kumar

摘要

A monopole antenna consisting of meander line radiating strips at the medical implant communication (MIC) frequency band (402–405 MHz) is presented. The proposed antenna has an overall volume of 4160 mm3 (40 mm × 65 mm × 1.6 mm) which is designed on an FR4 substrate with shorting pins along the substrate length to achieve miniaturization. The antenna specific absorption rate (SAR) is simulated by implanting the antenna on the top surface and within the three-layered human body model with a typical input power of 1 mW. The average 10 g SAR of the antenna at the skin, fat and muscle are 0.1737, 0.00024, 0.0000256 W/Kg and 0.0217, 0.0179 and 0.09166 W/Kg, respectively, when the antenna was implanted at the top and underneath the skin. A prototype of the antenna was fabricated and measurement is performed to validate the simulation results. The measured −10 dB impedance bandwidth of 8 MHz between 400 and 408 MHz covering MIC frequency band has been realized with maximum gain of −1.6 dB. The omnidirectional radiation characteristics and permissible SAR value makes the proposed antenna a suitable candidate for implantable biotelemetry applications.