Low-Cost Air Gap Metasurface Structure for High Absorption Efficiency Energy Harvesting

This manuscript deals with the design of a metamaterial-based surface structure for high efficiency wireless power harvesting or collection. Differently from the previously presented structures which require the use of thicker and low-loss (and for this reason high cost) dielectric substrates, the p...

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Bibliographic Details
Published in:International journal of antennas and propagation 2019, Vol.2019 (2019), p.1-8
Main Authors: Chen, Zhizhang, Huang, Yongjun, Li, Jian, Wen, Guangjun, Zhao, Fading, Yang, Zhao, Hu, Wei, Inserra, Daniele
Format: Article
Language:English
Subjects:
Absorption
Air gaps
Applied physics
Arrays
Collection
Design
Design optimization
Efficiency
Employment
Energy
Energy harvesting
Metamaterials
Metasurfaces
Power efficiency
Propagation
Substrates
Surface chemistry
Surface structure
Thickness
Unmanned aerial vehicles
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Summary:This manuscript deals with the design of a metamaterial-based surface structure for high efficiency wireless power harvesting or collection. Differently from the previously presented structures which require the use of thicker and low-loss (and for this reason high cost) dielectric substrates, the presented work employs a dual-layer structure with a thin low-loss material and an air gap; they allow for the design of very high absorption efficiency metamaterial-based surfaces, with noticeably reduced costs. Furthermore, the air gap thickness can be used as a new degree-of-freedom (more easily adjustable than the thickness of a single-layer structure) for the optimization of other design requirements such as bandwidth or structure sizes. In comparison with other existing designs, the proposed metasurface shows a comparable absorption efficiency of 84.4% but with a larger power collection surface and lower costs.
ISSN:1687-5869
1687-5877
DOI:10.1155/2019/1727619