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This study introduces a miniaturized monopole antenna tailored for implantable medical IoT applications in the 2.45 GHz Industrial Scientific Medical (ISM) band. The antenna employs dual rectangular slots, shorting pins, and a stub-loaded feed line to achieve a compact footprint of 22 × 22 ×  1 mm3 while enhancing impedance matching and radiation efficiency. Fabricated on an FR4 substrate (εr = 4.4, tan δ = 0.0009), the design demonstrates a return loss of − 35 dB at 2.45 GHz, a gain of 2.54 dBi, and a radiation efficiency of 99.7%. Simulation results confirm its suitability for continuous physiological monitoring in IoT-enabled healthcare systems. The simulation outcomes are gathered using CST-MW.

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Compact Dual Rectangular Slot Monopole Antenna with Shorting Pins for Implantable Medical IoT Devices

  • 会议论文

  • 发表日期：

    2026年

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  • Raghad Ghalib Alsultan

摘要

This study introduces a miniaturized monopole antenna tailored for implantable medical IoT applications in the 2.45 GHz Industrial Scientific Medical (ISM) band. The antenna employs dual rectangular slots, shorting pins, and a stub-loaded feed line to achieve a compact footprint of 22 × 22 ×  1 mm3 while enhancing impedance matching and radiation efficiency. Fabricated on an FR4 substrate (εr = 4.4, tan δ = 0.0009), the design demonstrates a return loss of − 35 dB at 2.45 GHz, a gain of 2.54 dBi, and a radiation efficiency of 99.7%. Simulation results confirm its suitability for continuous physiological monitoring in IoT-enabled healthcare systems. The simulation outcomes are gathered using CST-MW.