The transmission characteristics of dielectric-coated metallic hollow waveguides (DMHW) are simulated by means of Ray Model, Transmission Line Model, and Finite Element Analysis methods. By comparing the simulation results in mid- and far-infrared, terahertz and millimeter wavelength bands, the range of application and deviation analysis of three simulation methods are presented. Limitations of each simulation model are summarized. The optimization methods of structural parameters for the DMHW in various wavelength bands are provided. The loss properties of the DMHW were measured in 2–10 μm infrared wavelength band, 140–220 GHz millimeter wavelength band, and 2.5THz and 4.3THz frequencies. The measured data agree with the simulation results.

通过射线模型、传输线模型和有限元分析方法模拟了电介质涂层金属空心波导 (DMHW) 的传输特性。通过比较中远红外、太赫兹和毫米波段的仿真结果，给出了三种仿真方法的适用范围和偏差分析。总结了每个仿真模型的局限性。给出了各波段DMHW结构参数的优化方法。DMHW 的损耗特性在 2-10 μm 红外波段、140-220 GHz 毫米波段以及 2.5THz 和 4.3THz 频率下测量。实测数据与仿真结果一致。