本文叙述单脉冲雷达用的一种多模波纹馈源的特性。激励和、差通道模是用四个方口径的输入波导。当参数选择适当时,就有可能形成具有低交叉极化的辐射方向图,这样就可以求得目标的极化特性。本文还发表了关于波导不连续性问题的分析结果,而且叙述了补偿各模之间相位差的方法。一些初步的试验结果与理论结果是吻合的。 This article describes the characteristics of a multi-mode ripple feed for monopulse radar. Excitation and, poor channel mode is the use of four square-wave input waveguide. When the parameters are chosen properly, it is possible to create a radiation pattern with low cross-polarization so that the polarization characteristics of the target can be obtained. This paper also published the analysis results on waveguide discontinuity, and described the method of compensating the phase difference between the modes. Some preliminary experimental results are consistent with the theoretical results.