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所在平台: Udemy |
课程主页: https://www.udemy.com/course/antenna-arrays/
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Coursera 课程《雷达与通信天线阵列》内容总结 本课程旨在通过简洁明了的步骤，指导学员设计具有串联馈电和并联馈电网络的**天线阵列**。 **核心内容包括：** * **阵列设计基础：** * **第一课：** 学习设计具有均匀功率分配的串联馈电阵列。 * **第二课：** 学习设计分流馈电的贴片天线阵列。 * **第三课：** 利用第二课中的插入馈电贴片阵元，构建并联馈电天线阵列。 * **电磁场分析与辐射特性：** * **第四课：** 解释如何在仿真结果中“解读”电磁场分布图。 * **第五课与第七课：** 讲解辐射方向图和波束形成角，并介绍计算这些参数的简单公式和概念（如**波前**）。 * **高级设计技术：** * **第六课：** 介绍天线单元**加权技术**，用于降低旁瓣电平，尽管会增加波束宽度。 * **第八课：** 探讨在阵列设计过程中可能遇到的挑战及其解决方案。 * **第九课：** 简要介绍雷达和通信系统中常用的天线阵列配置。 * **特定天线设计实例：** * **第十课与第十一课：** 提供**缝隙波导阵列**和**超材料天线**设计的具体步骤。 **软件与工具：** * 本课程使用**开源电磁场求解器 openEMS** 进行仿真，并提供独特的脚本，可以直接使用 **Octave** 输出漂亮的电磁场分布图，无需导出数据到其他软件。 * 强调 openEMS 的免费、开源和活跃的 GitHub 社区支持。 **课程特色：** * 提供**多样的天线仿真实例**，包括串联、分流和并联馈电的常见阵列配置。 * 鼓励互动，提问者可以获得课程更新和解答。 * 推荐使用更**鲁棒、宽带**的阵元替代贴片阵元。 * 内容**精炼紧凑**，强调概念的清晰传达。
Simple step-by-step instructions will help you to design antenna arrays with series feeding and parallel feeding networks. You will learn how to "read" electromagnetic field distribution results; you will find out how to calculate radiation pattern and beamforming angle using simple formulas. Moreover, this course includes short introduction to common antenna array configurations that are often used in real radars and communication systems. At the end of this course, you will find practical instructions on slotted waveguide array design and metamaterial antenna design. It's time to replace patch elements with something more robust and wideband. Extremely compact, distilled, with multiple antenna simulation examples using openEMS - a free electromagnetic field solver. First three lessons - the basics! In lesson 1 you will learn how to design series-fed arrays with uniform power distribution. Full procedure and simulation example for weighted series arrays available in lesson 6. Lesson 2 shows how to design shunt-fed patch arrays. Lesson 3 reuses inset-fed patch element from lesson 2 to build a parallel-fed antenna array.Each simulation includes electromagnetic field distribution graph, which is explained in lesson 4.Lessons 5 and 7 explain radiation pattern and beamforming. These two lessons share common formulas and concepts, such as wavefront. Lesson 6 in-between describes antenna element weighting technique that can be used to reduce side lobe levels at the cost of increased beamwidth.From the Lesson 8 you will learn how to solve some of the challenges you may face during array design process.Lesson 9 is a brief introduction to common antenna array configurations.Additionally, lessons 10 and 11 provide design steps required for slotted waveguide and simple metamaterial antenna design.This course includes unique example scripts to perform openEMS simulations for all common array antenna configurations (in-line series, shunt-fed and parallel feeding) with routines that output beautiful EM field distribution graphs directly using Octave. No need to export data to other software!While running openEMS simulations feels a little difficult compared to HFSS or CST Microwave Studio, openEMS is absolutely free, open source and has an active GitHub discussion forum.If you have any difficulties with understanding provided concepts and design steps - simply ask me a question! I'll try my best to update this course with answers to all your questions on antenna design!
