JMCER

A Review on Advanced Rectenna System for Wearable Applications

  • Received
    March 8, 2025
  • Revised
    May 7, 2025
  • Accepted
    May 21, 2025
  • Published
    June 5, 2025

Authors

  • Shahad M. Khalil
  • Shamil H. Hussein

Abstract: This article presents a review of different types of miniaturized rectenna integrated circuits (IC) used for energy harvesting applications such as wearable applications. Two fundamental parts make up the rectenna design: a receive antenna that gathers radio-frequency (RF) energy from the ambient and a rectifier circuit that converts RF energy into DC voltage for use in low-power electronics devices like wearable medical devices (WMDs). In order to increase conversion efficiency and output power at a specific input power and suitable load resistance, microwave Schottky diodes from the HSMS-28xx and SMS-76xx series are utilized as a voltage doubler rectifier (VDR) integrated with a wearable antenna. The miniaturization, patient safety, biocompatibility, operating frequency, insensitivity to detuning, and conversion efficiency are some of the many challenges in the design of wearable rectenna IC. This review paper provides an overview of the entire body of research on rectennas conducted for novel design approaches in wearable devices operating at industrial, scientific, and medical (ISM) bands like 2.4GHz, 915MHz, and 415MHz.

Keywords: Energy Harvesting System, Wearable Sensors, Rectifier Circuits, and Wearable Antenna

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