A 3 - Dimensional Stacked Metamaterial Arrays for Electromagnetic Energy Harvesting

We present the design of 3-D metamaterial stacked arrays for e-cient conversion of electromagnetic waves energy into AC. The design consists of several vertically stacked arrays where each array is comprised of multiple Split-Ring Resonators. The achieved conversion e-ciency is validated by calculating the power dissipated in a resistive load connected across the gap of each resonator. Numerical simulations show that using stacked arrays can signiflcantly improve the e-ciency of the harvesting system in comparison to a ∞at 2-D array. In fact, the per-unit-area e-ciency of the 3-D design can reach up to 4.8 times the case of the 2-D array. Without loss of generalization, the designs presented in this work considered an operating frequency of 5:8GHz.