Progress In Electromagnetics Research B
ISSN: 1937-6472
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By T. Almoneef and O. M. Ramahi

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By virtue of their ability to resonate at a wavelength much larger than the maximum dimension, Split-Ring Resonator (SRR) cells can be densely stacked to create energy harvesting arrays having per-unit-area power efficiency higher than a single SRR cell. While the concept of using metamaterial particles for electromagnetic energy harvesting had been demonstrated in our earlier work, the overall efficiency of an SRR array in comparison to classical antenna arrays is fundamental to the viability of this technology. In this work, we focus on a comparative study based on numerical full-wave simulations where an array of SRRs is compared to an array of microstrip antennas. We show that an SRR array can provide significant enhancement in power efficiency and bandwidth in comparison to the classical microstrip patch antenna. Experimental validation is provided showing SRR arrays can provide significant energy-absorption enhancement.

T. Almoneef and O. M. Ramahi, "Split-Ring Resonator Arrays for Electromagnetic Energy Harvesting," Progress In Electromagnetics Research B, Vol. 62, 167-180, 2015.

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