A Highly Efficient, Scalable, Tetra-Band Metamaterial-Based Ambient RF Energy Harvester

IF 4.5 1区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2025-04-14 DOI:10.1109/TMTT.2025.3555848

Aaron M. Graham;Spyridon Nektarios Daskalakis;Vincent Fusco;Manos M. Tentzeris;Stylianos D. Asimonis

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引用次数: 0

Abstract

This article presents an innovative metamaterial-based radio frequency (RF) energy harvesting system designed to efficiently capture ambient RF energy across multiple frequency bands, including Wi-Fi (2.45 GHz) and 5G (0.9, 1.8, 2.1 GHz). Utilizing electric inductive-capacitive resonators and a rectification circuit, the system converts ambient RF energy into direct current (dc) power with high efficiency. Specifically, a single unit cell of the proposed

$8 \times 8$

harvester is capable of generating up to

$562~\mu $

W under an RF ambient power density of

$40~\mu $

W/cm². This high efficiency and scalability make it ideal for powering low-power Internet-of-Things (IoT) devices and sensors. The design emphasizes optimizing the unit cell to minimize computational complexity, enabling a more straightforward and scalable implementation. Experimental results demonstrate the system’s ability to efficiently harvest RF power across the specified bands, validating its potential as a sustainable solution for the growing power demands of IoT networks.

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一种高效、可扩展、基于四波段超材料的环境射频能量采集器

本文介绍了一种创新的基于超材料的射频（RF）能量收集系统，旨在有效地捕获多个频段的环境射频能量，包括Wi-Fi （2.45 GHz）和5G （0.9, 1.8, 2.1 GHz）。该系统利用电感容谐振器和整流电路，将环境射频能量高效率地转换为直流（dc）功率。具体来说，在RF环境功率密度为40~\mu $ W/cm2的情况下，所提出的8 \ × 8$收割机的单个单元电池能够产生高达562~\mu $ W的功率。这种高效率和可扩展性使其成为低功耗物联网（IoT）设备和传感器供电的理想选择。该设计强调优化单元，以最大限度地减少计算复杂性，从而实现更直接和可扩展的实现。实验结果表明，该系统能够有效地收集指定频段的射频功率，验证了其作为物联网网络不断增长的功率需求的可持续解决方案的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Microwave Theory and Techniques 工程技术-工程：电子与电气

CiteScore

8.60

自引率

18.60%

发文量

486

审稿时长

6 months

期刊介绍： The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.