赋形的哥利高里馈源

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。

SHAPED GREGORIAN FEEDS

The paper describes a shaped Gregorian feeds which includshorn,modified ellipsoid subrelector and dielectric body.The dielectric bodylinks horn and subreflector.The paper derives a set of equations whosesolution yields directly the both subreflector and dielectric body profilesto qive a specified amplitude and phase distribution in the main reflectoraperture.The shaped feeds has two particular advantages.First,it puts offthe support of subreflector.Next,it retains the shape of paraboloid mainreflector.