本文从“调制度”和“等信号轴”的概念出发,推导了它们与微波系统幅相特性的关系,并且在差支路信号的合成中引入了椭圆极化波的概念,得出了计算方位与俯仰信号互耦的公式,对宽带设计应当注意的一些具体问题也作了简单的讨论。 Based on the concepts of “modulation degree” and “equal signal axis”, this paper derives the relationship between them and the amplitude and phase characteristics of microwave system, and introduces the concept of elliptic polarization in the synthesis of differential branch signals. Azimuth and pitch signal mutual coupling formula, the broadband design should pay attention to some specific issues also made a simple discussion.