A genetic algorithm approach to the design of ultra-thin electromagnetic bandgap absorbers
A genetic algorithm approach to the design of ultra-thin electromagnetic bandgap absorbers
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DOI：
10.1002/mop.10971
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发表时间：
2003-07-05
影响因子：
1.5
通讯作者：
Werner, DH
中科院分区：
文献类型：
--
作者：
Kern, DJ;Werner, DH
提出了一种利用电磁带隙超材料（也称为人工磁性导体）实现超薄吸收体的设计方法。最近提出的一种方法是将电阻片放置在频率选择表面附近，作为人工磁性导体。然而，我们在本文中证明，将损耗直接纳入频率选择表面可以消除额外的电阻片，从而进一步减少吸收器的总厚度。利用遗传算法对损耗频率选择表面的几何结构和相应的电阻进行优化，以实现最薄的吸波器。介绍并讨论了两个基因工程电磁带隙超材料吸收体的实例。(C) 2003 Wiley期刊有限公司
A design methodology is presented for utilizing electromagnetic bandgap metamaterials, also known as artificial magnetic conductors, to realize ultra-thin absorbers. One approach that has recently been proposed is to place a resistive sheet in close proximity to a frequency-selective surface acting as an artificial magnetic conductor. However, we demonstrate in this paper that incorporating the loss directly into the frequency selective-surface can eliminate the additional resistive sheet, thereby further reducing the overall thickness of the absorber. The geometrical structure and corresponding resistance of this lossy frequency-selective surface is optimized by using a genetic algorithm to achieve the thinnest possible absorber. Two examples of genetically engineered electromagnetic bandgap metamaterial absorbers are presented and discussed. (C) 2003 Wiley Periodicals, Inc.