“电磁场与电磁波”课程教学案例设计实例

A Teaching Case Design for the Electromagnetic Field and Electromagnetic Wave Course

案例教学法是一种启发学生思考,培养学生探究能力,激发学生求知欲和学习兴趣的有效方法。本文以“电磁场与电磁波”课程中的同轴线性能分析为例,给出引导学生研究分析同轴线特性的方法。在分析单位长电容、单位长电感、特性阻抗和传输功率性能参数基础上,启发学生结合实际应用需求,从耐压、传输功率和传播损失三个不同角度分析同轴线的特性,并通过数值模拟的方法,给出直观的结果。教学实践表明,该方法教学效果良好。

The case teaching method is an effective way to inspire students to think,cultivate students'inquiry ability and stimulate students'thirst for knowledge and interest in learning.The performance analysis of coaxial lines is taken as an example in the course of Electromagnetic Field and Electromagnetic Wave,hence a way of guiding students to analyze the coaxial lines’characteristics is given.Based on the analysis of per-unit-length capacitance,per-unit-length inductance,characteristic impedance and transmission power,students are guided and inspired to analyze coaxial lines’characteristics from these three aspects of withstanding voltage,transmission power and transmission loss.Finally,the intuitive results are given by means of numerical simulation.Teaching practice shows that the proposed case teaching method has a good teaching effect.