A Multiband, Polarization-Controlled Metasurface Absorber for Electromagnetic Energy Harvesting and Wireless Power Transfer

A multiband, polarization-controlled energy harvesting metasurface is presented in this article for harvesting electromagnetic energy in the Wi-Fi bands. Inspired by the split-ring resonator (SRR), a metasurface of SRRs is designed by nesting multiple SRRs together. The novelty of the design lies in...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2022-05, Vol.70 (5), p.2861-2871
Main Authors: Wei, Yiqing, Duan, Junping, Jing, Huihui, Lyu, Zhou, Hao, Jingxian, Qu, Zeng, Wang, Jiayun, Zhang, Binzhen
Format: Article
Language:English
Subjects:
Absorbers
Absorption
Ambient energy harvesting (AEH)
Anechoic chambers
Arrays
Controllability
Dielectrics
Energy
Energy harvesting
Impedance matching
Metasurfaces
Periodic structures
Polarization
polarization-controlled
Power transfer
rectenna array
rectifier
Rectifiers
Sensor arrays
split resonant rings
triple-band rectenna
wireless energy transfer (WPT)
Wireless fidelity
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Summary:A multiband, polarization-controlled energy harvesting metasurface is presented in this article for harvesting electromagnetic energy in the Wi-Fi bands. Inspired by the split-ring resonator (SRR), a metasurface of SRRs is designed by nesting multiple SRRs together. The novelty of the design lies in the controllable multiband polarization and adjustable absorption frequency, so as to achieve the active modulation of energy harvesting on the metasurface at different frequencies. The metasurface is composed of a periodic array of SRRs unit cells, an impedance-matched rectifier, and a load. Metasurface arrays and rectifier integration are proposed to reduce power losses, while the channels formed by the array enhance energy density and improve the ability to capture energy. Moreover, the design for the rectifier is capable of rectifying RF energy from multiple Wi-Fi bands simultaneously at low input RF power density. The finite array of 5\times 5 SRRs absorber is fabricated and tested. Measurements in an anechoic chamber show that the fabricated prototype reaches the efficiency of 66.5% at 2.4 GHz, 40.6% at 5.2 GHz, 35.6% at 5.8 GHz under transverse electric (TE) polarization, and 38.3% at 5.3 GHz under transverse magnetic (TM) polarization when the incident power density is greater than 66 \mu \text{W} /cm 2 .
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2022.3155718