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本文描述的赋形馈源,由喇叭、椭球副反射器及将它们连接起来的介质体构成。通过赋形,该馈源可使反射面天线的主反射面口面得到预定的振幅和相位分布。文中叙述了赋形馈源的物理原理,推导了赋形方程,从而得到了赋形馈源的工程设计方法。应用该赋形馈源,可以免去一般反射面天线的馈源支撑,并保持抛物面主反射器的形状不变。
The shaping feed described herein consists of a horn, ellipsoid subreflector, and a media body that connects them together. By shaping, the feed allows the main reflector surface of the reflector antenna to have a predetermined amplitude and phase distribution. In this paper, the physical principle of forming feed is described, and the forming equation is deduced, so that the engineering design method of forming feed is obtained. With this shaped feed, the feed support of the general reflector antenna can be eliminated and the shape of the parabolic main reflector remains unchanged.