Low-Cost Air Gap Metasurface Structure for High Absorption Efficiency Energy Harvesting

<div>Simulated unit cell <i>S</i><sub>11</sub> and efficiency as a function of the air gap <i>h</i><sub>2</sub>.</div>

International Journal of Antennas and Propagation

Figure 4: Low-Cost Air Gap Metasurface Structure for High Absorption Efficiency Energy Harvesting 