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Four-band electromagnetic energy harvesting with a dual-layer metamaterial structure

机译：具有双层超材料结构的四波段电磁能量收集

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摘要

A four-band metamaterial harvester for harvesting 0.9 GHz, 1.8 GHz, 2.6 GHz, and 5.8 GHz signals is proposed by a dual-layer structure. 0.9 GHz and 1.8 GHz bands are harvested by the resistors in front layer, whereas harvesting of 2.6 GHz is achieved by the resistors in second layer. All resistors in front and back layer contribute to harvesting at 5.8 GHz. Numerical calculations are verified by two different full-wave electromagnetic solvers based on finite-integration and finite-element techniques. Power dissipation ratios at 0.9 GHz, 1.8 GHz, 2.6 GHz and 5.8 GHz frequencies concentrated at the resistors are found as 82.3%, 82.8%, 74.6%, and 83.6%, respectively, by the finite-integration-based solver. Besides, the finite-element method-based solver results in harvesting efficiencies of 79.6%, 93.4%, 73.7%, and 93.8%. The efficiency of the harvester is investigated for different oblique incidences. The proposed metamaterial harvester can be a good candidate for multi-band absorption and harvesting applications.
机译：通过双层结构提出了一种用于采集0.9 GHz，1.8 GHz，2.6 GHz和5.8 GHz信号的四波段超材料采集器。 0.9 GHz和1.8 GHz频段由前层的电阻器采集，而2.6 GHz的采集由第二层的电阻器采集。正面和背面的所有电阻器都有助于在5.8 GHz频率下采集信号。数值计算由两个基于有限积分和有限元技术的全波电磁求解器验证。基于有限积分的求解器发现，集中在电阻器上的0.9 GHz，1.8 GHz，2.6 GHz和5.8 GHz频率处的功耗比分别为82.3％，82.8％，74.6％和83.6％。此外，基于有限元方法的求解器可实现79.6％，93.4％，73.7％和93.8％的采集效率。针对不同的倾斜情况，研究了收割机的效率。拟议的超材料收集器可以成为多波段吸收和收集应用的理想选择。

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