High performance metamaterial device with enhanced electromagnetic energy harvesting efficiency | Zendy

Shuai Shang | Zendy; ShiZhong Yang | Zendy; Meng Shan | Zendy; Jing Liu | Zendy; Hailin Cao | Zendy

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High performance metamaterial device with enhanced electromagnetic energy harvesting efficiency

Author(s) -

Shuai Shang,

ShiZhong Yang,

Meng Shan,

Jing Liu,

Hailin Cao

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.5002165

Subject(s) - energy harvesting , metamaterial , resistor , metamaterial absorber , optoelectronics , materials science , rectifier (neural networks) , electrical impedance , electromagnetic radiation , split ring resonator , resonator , electrical engineering , optics , energy (signal processing) , physics , computer science , tunable metamaterials , engineering , voltage , stochastic neural network , machine learning , recurrent neural network , artificial neural network , quantum mechanics

A high performance metamaterial device for electromagnetic energy harvesting is presented. The unit cell of the metamaterial device consists of four identical omega ring resonators arranged in rotational symmetry, and each omega ring is loaded with a 50 Ω resistor that mimics the input impedance of a rectifier circuit. A proof-of-concept prototype is designed for operation at the frequency of 5.8 GHz. Here, the efficient energy harvesting is validated by the energy dissipated in each resistor. Based on the full absorption concept, the metamaterial device achieves a harvesting efficiency up to 93.1% under normal incidence. In addition, the energy harvester shows polarization independent and wide-angle incident frequency responses with good harvesting characteristics over the entire operating range. The surface current distribution is analyzed to gain an insight into the energy harvesting mechanism. Moreover, the harvester prototype is manufactured and measured, and the simulated and measured results are in good agreement. Due to the enhanced electromagnetic energy harvesting efficiency, the proposed device is a good candidate for microwave power transmission

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