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本文介绍了在考虑馈源辐射场球面相位误差基础上，运用口径场积分和几何绕射理论（ＧＴＤ）相结合分析天线辐射特性的一种方法，并对口径场进行了优化设计，给出了分析和测试结果。该分析方法可应用于其它轴对称双反射面天线。
Based on the spherical phase error of feed radiation field, this paper introduces a method to analyze the radiation characteristics of antenna by using the calculus field integral and the theory of geometric diffraction (GTD). The caliber field is optimized, Analysis and test results. This method of analysis can be applied to other axisymmetric dual-reflector antennas.