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本文以采用双喇叭馈源、抛物面天线的高频和差式三通道比幅单脉冲雷达接收机为例,分析通道传输不一致所造成的影响,得出表1中的结果与相应的结论。并结合经验,给出工程设计时,和差器前后各部份相位不一致所允许的参考范围。同时还指出:和差器前各通道间存在相位不平衡τ时,不仅使天线“零深”变坏,还将使鉴相器的相位翻转出现缓慢的过渡区,文中分析了这一特性,并认为它对导引头系统的设计及导引头的整机调试有较大的指导意义。本文的分析对以多模为馈源的天线系统具有适用性。
In this paper, taking dual-horn feed, parabolic antenna high-frequency and differential three-channel monopulse radar receiver as an example to analyze the channel transmission caused by inconsistent results obtained in Table 1 and the corresponding conclusions. And combined with experience, given engineering design, and before and after the difference between the various parts of the phase allowed by the reference range. At the same time, it is also pointed out that when the phase imbalance τ exists between the channels before the differentiator, not only the “zero depth” of the antenna is deteriorated, but also the phase of the phase detector will turn over to a slow transition zone. In this paper, And it is of great guiding significance to the design of seeker system and the whole debugging of seeker. The analysis in this paper is applicable to antenna systems that use multimode as their feed.