基于 Maxwell 的基本电磁场理论，根据导行电磁波得到矩形导波系统中 TM 波、TE 波的场分布方程， 并对传
播常数进行讨论，得到矩形波导中传输模式特性． 应用 MATLAB 计算金属矩形波导的传输模， 得到矩形波导中 TE、TM
模场分布． 研究结论对矩形波导设计提供参考．(ased on the basic electromagnetic field theory of Maxwell, the field distribution equation of TM wave and TE wave in rectangular guided wave system is obtained based on guided electromagnetic wave.

The transmission constants of the rectangular waveguide are discussed, and the transmission modes of the rectangular waveguide are calculated by MATLAB. The TE and TM in the rectangular waveguide are obtained.

The results of the study provide a reference for the design of rectangular waveguides.)