Harvesting the Energy of Multi-Polarized Electromagnetic Waves.

Harvesting the Energy of Multi-Polarized Electromagnetic Waves.
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DOI:
10.1038/s41598-017-15298-5
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发表时间:
2017-11-07
期刊:
影响因子:
4.6
通讯作者:
Ramahi OM
Ramahi OM
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Almoneef TS;Erkmen F;Ramahi OM

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我们提出了一种双极化超表面的电磁能量收集的想法和设计。设计了一个在相邻电池之间具有交替通孔的4 × 4超级电池,以允许在2.4 GHz的工作频率下从各种入射角捕获能量。收集的能量然后被引导到馈电网络,该馈电网络收集AC功率并将其馈送到整流电路。模拟结果产生的辐射到AC和AC到DC的转换效率分别约为90%和80%。作为概念证明,制造并测量了由9个超级电池组成的阵列。实验结果表明,所提出的能量采集器是能够捕获高达70%的能量,从平面波具有各种偏振,并将其转换为可用的直流电源。
We present the idea and design of a dual polarized metasurface for electromagnetic energy harvesting. A 4 × 4 super cell with alternating vias between adjacent cells was designed to allow for capturing the energy from various incident angles at an operating frequency of 2.4 GHz. The collected energy is then channeled to a feeding network that collects the AC power and feeds it to a rectification circuitry. The simulation results yielded a radiation to AC and an AC to DC conversion efficiencies of around 90% and 80%, respectively. As a proof of concept, an array consisting of 9 super cells was fabricated and measured. The experimental results show that the proposed energy harvester is capable of capturing up to 70% of the energy from a planewave having various polarizations and converting it to usable DC power.
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