改进型波束波导馈电双镜天线的辐射特性

本文导出了地面站常用的改进型波束波导馈电高效率双镜天线的辐射特性的计算式。根据这些式子可以计算天线的性能;诸如主极化和交叉极化的辐射图、波瓣峰值、半功率角常数、相位损失等等。为了适应工程上普遍性计算的要求,对上述计算式作了处理,并且根据一般工程要求进行了大量计算,得到便于在工程中应用的结论。

RADIATION PERFORMANCE OF HIGH EFFICIENCY DOUBLF REFLECTOR ANTENNA FED BY BEAM WAVEGUIDE

In this paper, the equations for calculation of the radiation performances on high efficiency double reflector antenna fed by beam waveguide are derived.Using these equations, the performance of the antenna can be predicted, such as the radiation patterns, the peak values of copolarization and depolarization, the factor of half power beam width, the phase loss and so on.These equations have been reformed to meet the requirements of general engineering eomputation. Some engineering computations are made, and some useful conclusions about the antenna are obtained.