给出了一种渐变线分析和综合的数值方法，该方法考虑了传播常数沿渐变线变化的因素以及色散效应，能对ＴＥＭ波和非ＴＥＭ波传输线的渐变结构作较好的近似处理，得到分析和综合复杂渐变线的普遍表达式。通过计算机优化方法，可直接得到渐变线的设计尺寸。在优化设计中，通过取不同的目标函数，能实现任意频率响应的渐变线。 A new method of gradient line analysis and synthesis is presented. The method takes into account the variation of propagation constant along the transition line and the dispersion effect, and can be used to approximate the gradual change of TEM and non-TEM transmission lines. Analyze and synthesize general expressions for complex gradient lines. Through the computer optimization method, can be directly graded line design size. In the optimization design, by taking a different objective function, can achieve any frequency response gradient line.