Metamaterial electromagnetic energy harvester with near unity efficiency

Thamer S. Almoneef; Omar M. Ramahi

doi:10.1063/1.4916232

Metamaterial electromagnetic energy harvester with near unity efficiency

Thamer S. Almoneef, Omar M. Ramahi

University of Waterloo

Research output: Contribution to journal › Article › peer-review

236 Scopus citations

Abstract

We present the design of a metamaterial medium for electromagnetic energy harvesting based on the full absorption concept. A metamaterial slab was designed comprising 13 × 13 electrically small cells, each loaded with an 82 Ω resistor which mimics the input impedance of a rectification circuitry. Unlike earlier designs of metamaterial absorbers, here the power absorption is mostly dissipated across a resistive load instead of the dielectric substrate. This implies that effective electromagnetic energy harvesting can be achieved. The power is channeled through a via connected to each cell. For a design optimized at 3 GHz, simulation and experimental results show power absorption efficiency of 97% and 93%, respectively.

Original language	English
Article number	153902
Journal	Applied Physics Letters
Volume	106
Issue number	15
DOIs	https://doi.org/10.1063/1.4916232
State	Published - 13 Apr 2015
Externally published	Yes

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10.1063/1.4916232

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Metamaterial electromagnetic energy harvester with near unity efficiency

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