A Dual-Band Energy Harvesting System Based on Metamaterial Transmission Lines

Authors

  • Chaiyong Soemphol Research Unit for Electrical and Computer Engineering Technology (RECENT), Faculty of Engineering, Mahasarakham University, Thailand
  • Amornthep Sonsilphong Department of Automation Robotic and Intelligent System Engineering, Faculty of Engineering, Khonkaen University, Thailand
Volume: 15 | Issue: 5 | Pages: 27601-27607 | October 2025 | https://doi.org/10.48084/etasr.11998

Received: 8 May 2025 | Revised: 15 July 2025 and 3 August 2025 | Accepted: 9 August 2025 | Online: 28 September 2025


Corresponding author: Amornthep Sonsilphong

Abstract

The growth of wireless communication systems and the proliferation of Internet of Things (IoT) devices have spurred significant interest in the development of energy harvesting techniques to power these devices autonomously. Radio Frequency (RF) energy harvesting, utilizing electromagnetic waves as a power source, has emerged as a promising solution due to its ubiquity and availability. This paper presents the design, simulation, and experimental validation of a metamaterial-based rectenna system for efficient RF energy harvesting, specifically designed for Wi-Fi frequencies of 2.4 and 5.0 GHz. The experimental results show that the obtained reflection coefficient (S₁₁) confirms the impedance matching and resonance behavior, showing good agreement between the simulated and measured results. The rectifier's output voltage and RF-to-DC conversion efficiency were evaluated across various input power levels and frequencies, achieving a peak efficiency of approximately 72% at 5 dBm. Moreover, the load sensitivity analysis revealed a stable operation across a broad range of resistances, whereas the distance-dependent measurements confirmed the rectenna’s capability to maintain a measurable output up to 250 cm from the source. These results validate that the proposed metamaterial transmission line can be used as an impedance matching part for low-power wireless energy harvesting applications.

Keywords:

RF energy harvesting, metamaterial, transmission line, wi-fi signal, impedance matching

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How to Cite

[1]
C. Soemphol and A. Sonsilphong, “A Dual-Band Energy Harvesting System Based on Metamaterial Transmission Lines”, Eng. Technol. Appl. Sci. Res., vol. 15, no. 5, pp. 27601–27607, Oct. 2025.

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