|
所在平台: Udemy |
课程主页: https://www.udemy.com/course/basic-microstrip-antenna-design-using-hfss-software/
课程评论：没有评论
Coursera 课程摘要：使用 HFSS 软件进行基础微带天线设计 本课程将介绍微带天线的基础知识及其设计方法。微带天线因其低剖面、易于制造、坚固耐用以及与 MMIC 设计兼容等优点，在许多应用中得到了广泛应用。 课程将重点讲解微带天线的构成：一个薄金属贴片（patch）置于介质基板上方，基板下方为接地板。通过选择合适的激励模式，可实现沿贴片法线方向（broadside radiator）的最大辐射。 具体而言，课程将涵盖： * **天线的通用特性：** 区分发射天线和接收天线的需求，以及频率选择性。 * **微带天线的优势：** 阐述其低剖面、可塑性、易于制造、机械强度、MMIC 兼容性以及在谐振频率、极化、方向图和阻抗方面的多功能性。 * **微带天线的结构：** 详细说明贴片、介质基板和接地板的组成，以及其关键尺寸参数（如贴片长度 L 和介质厚度 h）与波长（λ0）的关系。 * **辐射原理：** 解释如何通过适当的模式选择来实现定向辐射。 虽然课程大纲未列出，但预计将包含使用 HFSS 软件进行微带天线仿真和优化的实践环节。
Over the years, many types of antennas have been developed for different purposes. An antenna may be designed specifically to transmit or to receive, although these functions may be performed by the same antenna. A transmitting antenna in general, must be able to handle much more electrical energy than a receiving antenna. An antenna also may be designed to transmit at specific frequencies.Microstrip antennas are low profile, conformable to planar and nonplanar surfaces, simple and inexpensive to manufacture using modern printed-circuit technology, mechanically robust when mounted on rigid surfaces, compatible with MMIC designs, and when the particular patch shape and mode are selected, they are very versatile in terms of resonant frequency, polarization, pattern, and impedance.Microstrip antennas consist of a very thin (t λ0, where λ0 is the free-space wavelength) metallic strip (patch) placed a small fraction of a wave-length (h λ0, usually 0.003λ0 ≤ h ≤ 0.05λ0) above a ground plane. The microstrip patch is designed so its pattern maximum is normal to the patch (broadside radiator).This is accomplished by properly choosing the mode (field configuration) of excitation beneath the patch. For a rectangular patch, the length L of the element is usually λ0/3
