A optimized design of the bend is made using the high frequency simulation software . 5 . the coupler and the bend cause a phase change in the wave transmitted past the coupler in the sinuous feed and also a phase change in the coupled po ~ ver 分析计算了耦合器、波导弯头引入相位误差对天线性能的影响,在此基础上,采用对各个耦合器之间波导长度调节的方法,对阵面相位分布进行补偿。