Hybrid Genetic Programming for the Development of Metamaterials Designs With Improved Characteristics
Hybrid Genetic Programming for the Development of Metamaterials Designs With Improved Characteristics
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DOI：
10.1109/lawp.2018.2800057
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发表时间：
2018-01
影响因子：
4.2
通讯作者：
S. Clemens;M. Iskander;Z. Yun;J. Rayno
中科院分区：
文献类型：
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作者：
S. Clemens;M. Iskander;Z. Yun;J. Rayno
扩展了混合遗传程序（HGP）的功能，以允许开发具有先进特性的宽带二维超材料设计。人造磁导体（AMC）地平面和由HGP产生的可调谐太赫兹吸收器与文献中现有的设计进行了比较。HGP被证明可以产生与人类竞争的结果。与人类设计相比，HGP合成的AMC地平面具有更宽的带宽和更大的反射系数量级。其中，HGP的带宽比参考AMC提高了73.3%，最小反射幅度比参考AMC提高了1.0%。同样，由HGP合成的吸收体具有比最近发表的随机爬坡优化吸收体更大的带宽。用可调谐吸收器测试了三个偏置电压。当偏置为4、2和0.5 V/nm时，HGP吸收剂的带宽分别比参考吸收剂大23.1%、37.6%和400%。讨论了四个实例设计，并比较了结果，以说明所开发的hgp设计方法的优点。
The expansion of a hybrid genetic program's (HGP) functionality to allow for the development of broadband two-dimensional metamaterials designs with advanced characteristics is presented. Artificial magnetic conductor (AMC) ground planes and a tunable terahertz absorber generated by the HGP are compared with designs available in the literature. The HGP is shown to produce human-competitive results. The AMC ground planes synthesized by the HGP were found to produce improved results including wider bandwidths and larger reflection coefficient magnitudes than that of the human designs. For one of the designed AMCs, the HGP's bandwidth is 73.3% larger and the minimum reflection magnitude is 1.0% larger than the reference AMC. Similarly, the absorber synthesized by the HGP has larger bandwidths than that of a recently published absorber optimized by random hill climbing. Three bias voltages were tested with the tunable absorber. The bandwidths of the HGP absorber are 23.1%, 37.6%, and 400% larger than the reference absorber, for biases of 4, 2, and 0.5 V/nm, respectively. Four example designs are discussed together with comparative results to illustrate the advantages of the developed HGP-enabled design method.