在上述第二章和第三章中我们研究的是均匀无限长波导,在波导内不存在非连续点。所谓均匀是指波纹壁的参数Y/da和半锥角θ_0都保持不变,内径也没有突变。为了便于阐述,我们把θ_0和a连同Y/ka一起都归入波纹壁参数范围。常参数指Y/ka和θ_0不变,内径无突变;变参数指Y/ka或θ_0有变化,或者内径有突变。在上述两章中解决了常参数的问题。但是在实际工程中往往遇到变参数的情况,例如在工程中不可避免地要遇到标准光壁波导和波纹波导的连接,此时波导壁参数从光壁波导的Y/ka=∞变化到波纹波导的Y/ka。参数的变化除了 In Chapter 2 and Chapter 3 above, we studied a waveguide with a uniform and infinite length without discontinuities in the waveguide. The so-called homogeneous means that the corrugated wall parameters Y / da and half cone angle θ_0 remain unchanged, there is no change in the inner diameter. For ease of illustration, we include both θ_0 and a along with Y / ka in the wall parameter range. Often parameters that Y / ka and θ_0 unchanged, no change in diameter; variable parameter refers to Y / ka or θ_0 changes, or a mutation of the inner diameter. In the above two chapters to solve the problem of the constant parameters. However, in practical projects, it often encounters the problem of variable parameters. For example, in the project, it is unavoidable to encounter the connection between the standard optical waveguide and the corrugated waveguide. At this time, the parameters of the waveguide wall vary from Y / ka = ∞ of the optical waveguide Waveguide Y / ka. The parameters change except