TITLE:
A Dual-Band Rectenna for Ambient RF Energy Harvesting in RFID Systems
AUTHORS:
Yolande Elisée Mengue Kongep, Anne Marie Chana, Olivier Videme Bossou
KEYWORDS:
RFID Tag, RF/DC Conversion, Dual-Band Rectenna, Energy Recovery, Patch Antenna
JOURNAL NAME:
Open Journal of Antennas and Propagation,
Vol.14 No.1,
March
5,
2026
ABSTRACT: How to optimize simulation performance parameters such as gain, directivity, losses and bandwidth with a view to energy efficiency? This paper presents a dual-band rectenna based on a slotted patch antenna printed on an FR4 substrate (50 mm × 39 mm × 1.6 mm). This antenna model, whose parameters have been adjusted, is able to respond effectively to the two targeted resonance frequencies f1 = 900 MHz and f2 = 2.45 GHz at low power levels. The aim of this study is to develop a multifunctional antenna that can simultaneously act as an RFID tag and an ambient radio frequency energy recuperator, making its system self-powered. The proposed solution incorporates not only a sketch of an antenna, but also a rectifier circuit and an energy storage system. We have chosen to use a 3.7 V - 600 mAH Lithium Polymer (LIPO) battery for its low self-discharge, light weight and high energy density. The proposed solution is to radiate the antenna on two frequency bands in order to recover the surrounding RF energies. The GSM and Wi-Fi frequencies are a convincing choice, providing a high bandwidth, reflection coefficient and gain for optimum power. The RF/DC conversion circuit is based on a series topology using the SMS7630 Schottky diode, receiving an input power of between 10 dBm and 30 dBm, for load resistors of 2.5 kΩ, 3 kΩ and 3.5 kΩ respectively. Maximum conversion efficiency of 67.24% at 1.77 GHz for a 3 kΩ load resistor. The antenna and rectifier circuit were designed and simulated using Advanced Design System (ADS) 2023 R1 software. This study yielded RF/DC conversion efficiencies of 67.243% and 3.902% respectively for resonant frequencies of 1.77 GHz and 2.7 GHz with an optimum 3 kΩ load.