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In an Internet of Things (IoT) environment, RF energy harvesting offers an attractive opportunity to reduce dependency on regular batteries while supplying power simultaneously. This work successfully demonstrates a coaxial-fed circular microstrip patch antenna featuring a symmetrical triangular metal slit at the radiating edge, optimized for the GSM 1800 band on an FR-4 substrate. The proposed antenna achieves consequent enrichment of CP-XP isolation, miniaturization, and consistent gain, quantified as 36.04 dB, 29.68%, and 5 dBi, respectively. The structure also incorporates a single-stage Dickson voltage multiplier and a T-type distributed matching network, resulting in a power conversion efficiency (PEC) of 29% at − 5 dBm input power with an output voltage of 0.6 V and a PEC of 23.8% at 10 dBm input power, achieving an output voltage of 2.67 V.

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Design and Performance Analysis of a Triangular Slit-Loaded Circular Patch Antenna for Efficient RF Energy Harvesting for GSM 1800 Band

  • 会议论文

  • 发表日期：

    2025年

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  • Prithwish Bhattacharya,
  • Manoj Sarkar,
  • Debajyoti Misra,
  • Abhijyoti Ghosh,
  • L. Lolit Kumar Singh,
  • Sudipta Chattopadhyay

摘要

In an Internet of Things (IoT) environment, RF energy harvesting offers an attractive opportunity to reduce dependency on regular batteries while supplying power simultaneously. This work successfully demonstrates a coaxial-fed circular microstrip patch antenna featuring a symmetrical triangular metal slit at the radiating edge, optimized for the GSM 1800 band on an FR-4 substrate. The proposed antenna achieves consequent enrichment of CP-XP isolation, miniaturization, and consistent gain, quantified as 36.04 dB, 29.68%, and 5 dBi, respectively. The structure also incorporates a single-stage Dickson voltage multiplier and a T-type distributed matching network, resulting in a power conversion efficiency (PEC) of 29% at − 5 dBm input power with an output voltage of 0.6 V and a PEC of 23.8% at 10 dBm input power, achieving an output voltage of 2.67 V.