当今的微波与射频技术的应用比过去任何时候都更为普及和广泛。特别是在工商业的领域里，包括蜂窝电话、无线局域网（WLAN）、交通工具的毫米波防撞传感器、无线电台和电视的直接广播卫星、全球定位系统（GPS）、射频集成技术（RFIT）、超宽带（UWB）无线和雷达系统、用于环境监测的微波遥感系统等在内的微波技术更是无处不在。与此同时，国防体系继续高度依赖微波技术的发展，例如被动和主动探测、军用通讯和火控系统等。

现代射频与微波工程主要关注分布参数电路分析与设计，这与早期面向波导和场理论的方式已有显著不同。但不论如何，微波工程总是围绕电磁学的理论和方法展开，既有很强的理论性，也很强调工程实践。

本课程则主要教学内容包括：传输线理论、导波结构（波导和集成传输线）、网络分析、阻抗匹配与调谐、微波谐振腔、平面电路与元件设计等。

Today, microwave and RF technology is more pervasive than ever. This is especially true in the commercial sector, where modern applications include cellular phones, WiFi, millimeter-wave collision sensors for vehicles, direct broadcast satellites for radio, television, and GPS, RFIT, UWB radio and radar systems, and microwave remote sensing systems for the environment. Defense systems continue to rely heavily on microwave technology for passive and active sensing, communications, and weapons control systems.

Modern RF and microwave engineering predominantly involves distributed circuit analysis and design, in contrast to the waveguide and field theory orientation of earlier generations. But microwave engineering will always involve electromagnetics, with significant theoretical and practical features. Now this course will mainly be focused on transmission line theory, guided-wave structures (waveguides and integrated transmission lines), network analysis, impedance matching and tuning, microwave resonators, planar circuits and components design, etc.

This course provide a new methodology for teaching and learning, to guarantee the related students grasp the basic principles, concepts, analysis methods and experimental skills. Students should be able to analyze and solve the “long-line” problems and prepare themselves well for the learning of subsequent courses and be engaged in microwave domain.

      本课程提供了一套崭新的学习手段和方法，使学生掌握微波技术的基本理论、基本概念、基本分析方法、基本实验技能，培养学生分析和解决“长线”相关问题的能力，为后续课程的学习以及从事微波领域的工作打下良好的基础。