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A compact antenna designed for the ISM band operating at 2.58 and 5.8 GHz shows promising results on an FR-4 substrate of 15 × 30 mm. Upon simulation in CST, the S–S parameter exhibits resonance frequencies at 2.45 and 5.8 GHz, with gains of 1.675 dBi and 2.625 dBi, respectively. By introducing an AMC with a unit cell dimension of 0.75 λg × 0.75 λg × 0.027 λg as a backing for the antenna, the gain significantly improves to 5.449 and 3.665 dBi for 2.45 GHz and 5.8 GHz, respectively. Importantly, at 2.45 GHz, the specific absorption rate (SAR) measured is 1.53 W/kg, and at 5.8 GHz, it remains within acceptable limits for human safety at 0.568 W/kg. The proposed design of the antenna with the AMC can find applications in medical devices, IoT devices, and wearable devices for tracking and health monitoring.

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Design of Compact Dual-Band Antenna with Single-Layered AMC for Wearable Devices

  • 会议论文

  • 发表日期：

    2025年

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  • Meiyalagan Shanmugapriya,
  • Marimuthu Praveenkumar,
  • Mohandoss Shamilee

摘要

A compact antenna designed for the ISM band operating at 2.58 and 5.8 GHz shows promising results on an FR-4 substrate of 15 × 30 mm. Upon simulation in CST, the S–S parameter exhibits resonance frequencies at 2.45 and 5.8 GHz, with gains of 1.675 dBi and 2.625 dBi, respectively. By introducing an AMC with a unit cell dimension of 0.75 λg × 0.75 λg × 0.027 λg as a backing for the antenna, the gain significantly improves to 5.449 and 3.665 dBi for 2.45 GHz and 5.8 GHz, respectively. Importantly, at 2.45 GHz, the specific absorption rate (SAR) measured is 1.53 W/kg, and at 5.8 GHz, it remains within acceptable limits for human safety at 0.568 W/kg. The proposed design of the antenna with the AMC can find applications in medical devices, IoT devices, and wearable devices for tracking and health monitoring.