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Keywords = ambient energy harvesting (AEH)

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15 pages, 7077 KB  
Article
A Scalable, Wide-Angle Metasurface Array for Electromagnetic Energy Harvesting
by Wenping Li, Tao Shen, Binzhen Zhang and Yiqing Wei
Micromachines 2024, 15(7), 904; https://doi.org/10.3390/mi15070904 - 11 Jul 2024
Cited by 11 | Viewed by 2501
Abstract
A metasurface array for electromagnetic (EM) energy harvesting for Wi-Fi bands is presented in this paper; the metasurface array consists of a metasurface unit, a rectifier, and a load resistor. Each row of unit cells in the array is interconnected to form an [...] Read more.
A metasurface array for electromagnetic (EM) energy harvesting for Wi-Fi bands is presented in this paper; the metasurface array consists of a metasurface unit, a rectifier, and a load resistor. Each row of unit cells in the array is interconnected to form an energy transfer channel, which enables the transfer and concentration of incident power. Furthermore, at the terminal of the channel, a single series diode rectifier circuit and a load resistor are integrated in a coplanar manner. It is used to rectify the energy in Wi-Fi bands and enables DC energy harvesting across the load. Finally, a 5 × 7 prototype of the metasurface array is fabricated and measured for the verification of the rationality of the design. Testing in an anechoic chamber shows that the prototype achieves a 72% RF-DC efficiency at 5.9 GHz when the available incident power is about 7 dBm. Full article
(This article belongs to the Topic Advanced Energy Harvesting Technology)
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14 pages, 8513 KB  
Article
Scalable, Dual-Band Metasurface Array for Electromagnetic Energy Harvesting and Wireless Power Transfer
by Yiqing Wei, Junping Duan, Huihui Jing, Huimin Yang, Hao Deng, Chengwei Song, Jiayun Wang, Zeng Qu and Binzhen Zhang
Micromachines 2022, 13(10), 1712; https://doi.org/10.3390/mi13101712 - 11 Oct 2022
Cited by 26 | Viewed by 4498
Abstract
A dual-band metasurface array is presented in this paper for electromagnetic (EM) energy harvesting in the Wi-Fi band and Ku band. The array consists of metasurface unit cells, rectifiers, and load resistors. The metasurface units within each column are interconnected to establish two [...] Read more.
A dual-band metasurface array is presented in this paper for electromagnetic (EM) energy harvesting in the Wi-Fi band and Ku band. The array consists of metasurface unit cells, rectifiers, and load resistors. The metasurface units within each column are interconnected to establish two channels of energy delivery, enabling the transmission and aggregation of incident power. At the terminals of two channels, a single series diode rectifier and a voltage doubler rectifier are integrated into them to rectify the energy in the Wi-Fi band and the Ku band, respectively. A 7 × 7 prototype of the metasurface array is fabricated and tested. The measured results in the anechoic chamber show that the RF-to-dc efficiencies of the prototype at 2.4 GHz and 12.6 GHz reach 64% and 55% accordingly, when the available incident power at the surface is 3 dBm and 14 dBm, respectively. Full article
(This article belongs to the Topic Advanced Energy Harvesting Technology)
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