| 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. |