相关法测天线远场二维方向图
INTERFERENTIAL METHOD FOR TWO-DIMENSIONAL FAR-FIELD PATTERN MEASUREMENT
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摘要: 正 相关法测天线远场二维方向图的原理见文献[1,2]。本文介绍我们在176MHz和232MHz两个频率上,对北京天文台密云综合孔径射电望远镜天线(MSRT系统)进行的远场方向图测试情况。根据测试结果计算了天线方向性系数、有效面积、表面利用系数以及天线增益系数。并与通过傅里叶变换公式计算的天线方向图作了比较。 图1是实测系统方框图。被测天线T1和参考天线T2同时接收辐射源S的信息,然后经过前置放大器进入相关接收机进行相关处
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Abstract: We presented the measurements of two-dimensional far-field pattern of antennas, which are going to be used in Miyun synthetie-aperture radio telescope. The patterus were measured by means of interferential method with the quiet sun. The measured results were compareal with the calculated ones. -
P. G. Smith, IEEE Trans. on AP, AP-14(1966), 6.[2]J. W. M. Baats. IEEE Trans. on AP, AP-21(1973), 461.[3]王绶琯,北京天文台密云综合孔径设计方案(内部资料).[4]林昌禄,国外电子技术,1978年,第11期,第55页.[5]W. N. Christiansen and J. A. Hoghom著,陈建生译,射电望远镜,科学出版社,1977.[6]Н.Т.Бова讲,南京大学物理系天线教研组译,超高频天线,人民教育出版社,1959. -
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