以电磁场理论为出发点 ,对满足环状截面同轴金属波导边界条件的麦克斯韦方程组求解 ,得到了环状同轴波导管内的电磁场各分量方程 ,并以TE模为例详尽分析了环状金属波导管中的模式特征、色散关系、光束传播及其强度分布特性 Based on the theory of electromagnetic field, the equations of electromagnetic field in annular coaxial waveguide are obtained by solving the Maxwell’s equations which satisfy the boundary conditions of the coaxial metallic waveguide in the annular cross-section. The TE mode is taken as an example to analyze the cyclic metal waveguide Mode characteristics in tubes, dispersion relations, beam propagation and their intensity distribution