摘要
简要介绍了反射面天线近场聚焦测量方法,推导出了有限测试距离时用副反射面纵向偏焦补偿近场相差的计算公式,分析了近场聚焦测量与远场测量的数据结果,并给出了仿真和试验实例,仿真与试验结果吻合较好,近场聚焦法是一种可用于大口径天线性能测量的有效方法。
In this paper,the near-field focus test for reflector antennas is briefly described,the formula for calculating the compensation of near-field phase error with the off-set of sub-reflector with the limited test distance is derived and the data of near-field focus measurement and far-field measurement is analyzed.The simulation and experiment examples are also given in this paper,which shows that the test result is consistent with the simulation.And also the near-field focus test is an effective method for the test of large-size antenna performance.
出处
《中国电子科学研究院学报》
2010年第4期430-434,共5页
Journal of China Academy of Electronics and Information Technology
关键词
反射面天线
远场测试距离
有限测试距离
近场聚焦
天线方向图
reflector antenna
far-field test distance
limited test distance
near-field focus
antenna pattern
