Efficient metasurface for electromagnetic energy harvesting with high capture efficiency and a wide range of incident angles
This work introduces a miniaturized metasurface (MS) energy harvester operating at 5.54 GHz with a high capture efficiency and a wide incident angle. The proposed MS structure is comprised of an ensemble of electric ring resonator (ERR) array. The MS’s impedance is engineered to match free space,...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Tayler & Francis
2022
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/8518/1/J15336_783fb90eee68839565d6509505b55420.pdf http://eprints.uthm.edu.my/8518/ https://doi.org/10.1080/09205071.2022.2128898 |
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| Summary: | This work introduces a miniaturized metasurface (MS) energy harvester operating at 5.54 GHz with a high capture efficiency and a
wide incident angle. The proposed MS structure is comprised of an
ensemble of electric ring resonator (ERR) array. The MS’s impedance
is engineered to match free space, so that the incident electromagnetic (EM) power is efficiently captured with minimal reflection and
delivered to the optimal resistor load through an optimally positioned metallic-via. According to the simulation results obtained by
CST Microwave Studio, the proposed MS harvester achieves higher
conversion efficiency of about 91% under normal incidence and
more than 78% across a wider incident angle up to 60°. In order to
verify the simulation results, a 5×5 cell array of the proposed MS
harvester is fabricated and tested. The simulation and experimental results are well match. The proposed MS configuration can be
attractive for high-efficiency and compact wireless sensor network
harvesting systems. |
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