基于机器学习的广角扫描阵列广角阻抗匹配结构设计。

IF 3.9 2区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES
Sina Hasibi Taheri, Javad Mohammadpour, Ali Lalbakhsh, Slawomir Koziel, Stanislaw Szczepanski
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引用次数: 0

摘要

本文介绍了一种通用而高效的设计方法,用于优化广角阻抗匹配(WAIM)配置,提高任意天线阵列的扫描范围。利用层间的广义散射矩阵(GSMs)对三层结构进行建模,为有效的输入阻抗计算提供了充分的激励模式。为了扩大该方法的适用性和满足制造要求,它还考虑了阵列与WAIM之间除空气以外的介电材料。集成了机器学习(ML)算法来评估WAIM特征,减少计算时间和资源,同时以最小的设计干预增强对新结构的适应性。选择基于决策树的模型来提供准确的预测,同时最小化数据集准备时间。该方法包括使用三种机器学习算法训练网络,包括决策树、套袋和随机森林。采用遗传算法有效地确定了WAIM的最优参数。设计了三个匹配层,并对工作在9至11 GHz频率范围内的多个阵列进行了验证。随机森林模型对WAIM行为的预测效果最好,RMSE为0.033,[公式:见文本]得分为0.916,MAPE为2.161。结果表明,所设计的waim有效地提高了微带阵列和波导阵列在期望频率范围内的扫描范围。该方法实现了每个角度0.3秒的计算时间,比以前的方法快得多,总运行时间不到1小时,RAM使用最小(9.7 MB)。该方法为开发设计广角扫描阵列的工具和扩展其应用提供了一个有效的框架。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Machine learning-driven design of wide-angle impedance matching structures for wide-angle scanning arrays.

This paper introduces a versatile and efficient design methodology for optimizing wide-angle impedance matching (WAIM) configurations, enhancing the scanning range of arbitrary antenna arrays. The three-layered structure is modeled using the generalized scattering matrices (GSMs) of the layers, incorporating sufficient excited modes for efficient input impedance calculation. To broaden the method's applicability and meet manufacturing requirements, it also considers dielectric materials other than air between the array and WAIM. Machine learning (ML) algorithms are integrated to evaluate WAIM characteristics, reducing calculation time and resources while enhancing adaptability to new structures with minimal designer intervention. Decision Tree-based models are chosen to provide accurate prediction while minimizing the dataset preparation time. The methodology involves training a network using three ML algorithms, including decision tree, bagging, and random forest. Optimal WAIM parameters are efficiently determined using a genetic algorithm (GA). Three matching layers are designed and validated for several arrays operating at the frequency range between 9 and 11 GHz. The random forest model shows the best performance in predicting the WAIM behavior, with RMSE, [Formula: see text] scores, MAPE of 0.033, 0.916, and 2.161, respectively. Results demonstrate that the designed WAIMs effectively enhance the scanning range of both microstrip and waveguide arrays within the desired frequency range. The method achieves a calculation time of 0.3 s per angle, significantly faster than previous approaches, with a total runtime under an hour and minimal RAM usage (9.7 MB). This method offers an efficient framework for developing tools to design wide-angle scanning arrays and expand their applications.

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来源期刊
Scientific Reports
Scientific Reports Natural Science Disciplines-
CiteScore
7.50
自引率
4.30%
发文量
19567
审稿时长
3.9 months
期刊介绍: We publish original research from all areas of the natural sciences, psychology, medicine and engineering. You can learn more about what we publish by browsing our specific scientific subject areas below or explore Scientific Reports by browsing all articles and collections. Scientific Reports has a 2-year impact factor: 4.380 (2021), and is the 6th most-cited journal in the world, with more than 540,000 citations in 2020 (Clarivate Analytics, 2021). •Engineering Engineering covers all aspects of engineering, technology, and applied science. It plays a crucial role in the development of technologies to address some of the world''s biggest challenges, helping to save lives and improve the way we live. •Physical sciences Physical sciences are those academic disciplines that aim to uncover the underlying laws of nature — often written in the language of mathematics. It is a collective term for areas of study including astronomy, chemistry, materials science and physics. •Earth and environmental sciences Earth and environmental sciences cover all aspects of Earth and planetary science and broadly encompass solid Earth processes, surface and atmospheric dynamics, Earth system history, climate and climate change, marine and freshwater systems, and ecology. It also considers the interactions between humans and these systems. •Biological sciences Biological sciences encompass all the divisions of natural sciences examining various aspects of vital processes. The concept includes anatomy, physiology, cell biology, biochemistry and biophysics, and covers all organisms from microorganisms, animals to plants. •Health sciences The health sciences study health, disease and healthcare. This field of study aims to develop knowledge, interventions and technology for use in healthcare to improve the treatment of patients.
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