HF and Microwave Laboratory Improvement

使用最新技术的压力要求在电气工程师的高频（HF）实验室中包括网络分析仪（NA）测量。因此，该项目通过引入网络分析仪和通过重新编程控制器来表示NAs上的驻波来增强高频实验室，以维持这种经过验证的教学方法。近年来，随着具有量值和相位测量能力的矢量NAs的发展，计量学进入了一个新的时代。基于自包含的、微处理器驱动的仪器的NAs在某种程度上取代了手动测量的角色。从大小和相位方面描述组件的能力改变了设计和开发中使用的方法，因此，学生或实践工程师如何思考和可视化这些过程。矢量测量通常不包括在本科高频和微波实验室，主要是因为成本和讲师不愿意放弃槽线技术，因为它们直观地可视化地表示驻波。在NA显示器上模拟经典驻波模式是可能的。这就需要开发新的计算机程序模块。因此，即使在该项目提供的未来实验室环境中，也可以保留开槽线技术的直观优势。通过新的低成本NAs和定制显示器，学生可以在基于驻波直观概念的教学基础上学习当前工业中使用的测量计量。这种组合的NA环境可以用来加强实验室的学习，可以作为未来实验室发展的典范。＊

Pressure to use up-to-date technology mandates that network analyzer (NA) measurements be included in high-frequency (HF) laboratories for electrical engineers. Therefore, this project enhances a HF laboratory through introduction of network analyzers and through representation of standing waves on the NAs by reprogramming the controllers to maintain this proven approach to teaching. With the recent development of vector NAs that possess the capability of measuring both magnitude and phase, a new era in measurement metrology has begun. NAs based on self-contained, microprocessor-driven instruments have, to some extent, taken over the role from manual measurements. The ability to characterize a component in terms of magnitude and phase changes the methods used in design and development and, thus, how the student or practicing engineer thinks about and visualizes these processes. Vector measurements are not usually covered in undergraduate HF and microwave laboratories, primarily because of cost and a reluctance by instructors to move away from slotted line techniques because of their intuitive visual representation of standing waves. It is possible to emulate the classical standing-wave pattern on the NA display. This requires developing new computer program modules. Therefore, the intuitive advantage of the slotted line technique can be preserved even in the future laboratory environment provided through this project. With new, low-cost NAs and customized displays, students can be educated in current measurement metrology employed in industry while teaching is based on intuitive concepts of standing waves. This combined NA environment can be employed to enhance learning in laboratories that can serve as a model for future laboratory development. *