Ultra-broadband and polarization-independent planar absorber based on multilayered graphene
Ultra-broadband and polarization-independent planar absorber based on multilayered graphene
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基于多层石墨烯的超宽带且与偏振无关的平面吸收器
DOI：
10.1088/1674-1056/26/11/114102
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Charles Nwakanma Akwuruoha
中科院分区：
文献类型：
--
作者：
Jiao Wang;Chao-Ning Gao;Yan-Nan Jiang;Charles Nwakanma Akwuruoha
我们提出了一种超宽带和偏振无关的平面吸收体，包括多层石墨烯。该吸收体的带宽通过增加石墨烯的层数来扩展，并且由于其对称的单元结构，它是偏振无关的。全波模拟结果表明，具有三个石墨烯基层的吸收体可以有效地收集具有从17.9 GHz到188.7 GHz的随机极化的电磁波（即，覆盖从K到D频带的频率范围和165%的相对带宽）。本文用多层介质中的相消干涉法和多重共振法阐述了超宽带吸收的物理吸收机理。该吸波体可用于医疗、电磁兼容、隐身等领域。
We propose an ultra-broadband and polarization independent planar absorber comprising multilayered graphene. The.bandwidth of the proposed absorber is extended by increasing the number of layers of graphene, and it is polarization independent.due to its symmetrical unit structure. The full wave simulation results show that an absorber with three graphenebased.layers can efficiently harvest an electromagnetic wave with random polarization from 17.9 GHz to 188.7 GHz (i.e.,.covering frequency regimes from K to D bands and relative bandwidth of 165%). The physical absorption mechanism.of ultra-broadband absorption has been elaborated upon using the destructive interference method and multiple resonances.approach in a multilayered medium. The proposed absorber can be used in many applications such as medical treatment,.electromagnetic compatibility, and stealth technique.