EAGER:Development and Application of Genetic Programming in Design and Optimization of Ultra-wideband Metamaterials

EAGER：遗传编程在超宽带超材料设计与优化中的发展与应用

• 批准号: 1304917
• 负责人: Magdy Iskander
• 金额: $ 21.46万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-02-15 至 2017-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1304917&HistoricalAwards=false
• 关键词: EAGER; Development; Application; Genetic; Programming

Development and Application of Genetic Programming in Design and Optimization of Ultra-wideband MetamaterialsIntellectual MeritThe objectives of the proposed work are; (1) explore the applications and investigate the fundamental capabilities of the metamaterial technology in electromagnetics through the use of Genetic Programming and true 3-D structures, as opposed to traditional multi-layering approach, (2) Examine possible miniaturization through true 3-D implementation to facilitate possible metamaterials applications in what has been noted as the no man's land frequency bands of a few hundred Megahertz, and (3) Use developed strategies to develop ultra wideband (50:1) Artificial Magnetic Conductor (AMC) and absorbing ground planes using novel flexible lightweight patterned materials in these frequency bands. To create unique and non-intuitive 3D metamaterial structures, this work will employ a novel approach combining Genetic Programming (GP), a novel multidisciplinary bio-inspired optimization procedure generating optimized computer programs as solutions, Lindenmayer-system (L-system) for creating 3-D structures, non-linear optimization, and scripted text-based geometry input to full wave EM simulators. Candidate metamaterial geometries will be fabricated and tested using the rectangular transverse electro-magnetic (TEM) transmission line test chamber that was utilized in our earlier work in this area. The metamaterial performance will be further evaluated with antenna measurements using an UWB dual polarization cylindrical long-slot antenna array. Broader ImpactGP, having produced unique and quite successful results in other fields but has seen limited application in electromagnetics and promises to provide innovative solutions particularly when designing ultra wideband systems and devices. GP provides an authentic and bio-inspired insight in the fundamental development of the solution, thus has the potential for guiding innovative designs, and providing avenues to break new grounds in the optimization of electromagnetic structures. The proposed integrative and multidisciplinary approach, therefore, is aimed at using Genetic Programming and associated L-system to provide unique solutions and lead to more in-depth fundamental understanding of the capabilities of the metamaterial technology particularly in challenging application areas such that ultra wideband antenna designs, ground penetrating radar for Unexploded Ordnance (UXO) and IED detection, and in Radar Cross Section (RCS) applications requiring UWB performance at lower microwave frequencies. The developed GP programs will be disseminated via the Internet and described via publications. Additionally, the resulting programs and the optimization approach will be incorporated into antenna and electromagnetics courses in the University.

遗传编程在超宽带超材料设计和优化中的开发和应用智力价值拟议工作的目标是； (1) 通过使用遗传编程和真正的 3-D 结构，而不是传统的多层方法，探索超材料技术在电磁学中的应用并研究其基本能力，(2) 通过真正的 3-D 检查可能的小型化实施以促进可能的超材料应用，即数百兆赫的无人区频段，以及 (3) 使用已开发的策略来开发超宽带 (50:1) 人工磁导体 (AMC) 和在这些频段使用新型柔性轻质图案材料吸收接地层。为了创建独特且非直观的 3D 超材料结构，这项工作将采用一种新颖的方法，结合遗传编程 (GP)、一种新颖的多学科生物启发优化程序，生成优化的计算机程序作为解决方案，以及用于创建的 Lindenmayer 系统（L 系统） 3-D 结构、非线性优化以及基于脚本文本的几何输入到全波电磁模拟器。将使用我们在该领域早期工作中使用的矩形横向电磁（TEM）传输线测试室来制造和测试候选超材料几何形状。将使用 UWB 双极化圆柱形长槽天线阵列进行天线测量，进一步评估超材料性能。 Broader ImpactGP 在其他领域取得了独特且相当成功的成果，但在电磁学中的应用有限，并承诺提供创新的解决方案，特别是在设计超宽带系统和设备时。 GP 在解决方案的基础开发中提供了真实且受生物启发的见解，因此具有指导创新设计的潜力，并提供在电磁结构优化方面开辟新天地的途径。因此，所提出的综合和多学科方法旨在使用遗传编程和相关的 L 系统来提供独特的解决方案，并导致对超材料技术的功能有更深入的基本了解，特别是在具有挑战性的应用领域，例如超宽带天线设计、用于未爆炸弹药 (UXO) 和 IED 检测的探地雷达，以及需要在较低微波频率下实现 UWB 性能的雷达截面 (RCS) 应用。 制定的全科医生计划将通过互联网传播并通过出版物进行描述。此外，由此产生的程序和优化方法将被纳入大学的天线和电磁学课程中。