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本文叙述一种用于单脉冲雷达的波纹多模馈源的性能。该馈源用四个方喇叭输出口来激励和模与差模。适当地选择参数能使辐射方向图具有低的交叉极化电平,因而可适应截获目标的极化特性。本文给出了波导不连续性问题的分析结果并讨论了波导模之间相位差的补偿方法。一些初步的实验结果同理论计算相符合。
This article describes the performance of a corrugated multimode feed for a monopulse radar. The feed uses four square speaker outputs to energize and mode and differential modes. Proper selection of the parameters allows the radiation pattern to have a low level of cross-polarization and thus to adapt to the polarization characteristics of the intercepted target. This paper presents the analysis of waveguide discontinuities and discusses the compensation of phase differences between waveguide modes. Some preliminary experimental results are in line with theoretical calculations.