在高功率波导窗的研制中,由于陶瓷介质的存在,引起波导的不连续性,在介质附近区域产生非传输模式(Ghost Mode)。这种模式和其他相对于矩形波导截止的谐振模式不能在矩形波导中传输,其Q值很高,即使在较低的功率电平下,也能建立起很高的场强,导致窗的损坏。本文采用CST软件对高功率波导窗进行了模拟。高功率波导窗的示意图如图1所示,中间阴 In the development of high-power waveguide windows, the waveguide discontinuity is caused by the existence of the ceramic medium, resulting in a Ghost Mode in the vicinity of the medium. This mode and other resonant modes that are switched off relative to rectangular waveguides can not be transmitted in rectangular waveguides and have high Q values ​​that create very high field strengths even at lower power levels resulting in window damage . In this paper, CST software was used to simulate high power waveguide window. Schematic diagram of high-power waveguide window shown in Figure 1, the middle of Yin