MICROWAVE HOLOGRAPHIC METROLOGY OF LARGE REFLECTOR ANTENNAS
MICROWAVE HOLOGRAPHIC METROLOGY OF LARGE REFLECTOR ANTENNAS
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DOI：
10.1109/tap.1976.1141354
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发表时间：
1976-01-01
影响因子：
5.7
通讯作者：
WHITAKER, AJT
中科院分区：
文献类型：
--
作者：
BENNETT, JC;ANDERSON, AP;WHITAKER, AJT
描述了一种用于确定大型反射器天线的主极化孔径场和交叉极化孔径场的幅度和相位的微波全息技术。全息图形成过程利用通常与这些天线相关的方位角扫描系统的仰角，并且在这方面，在其他提出的现场探测方法中似乎是独特的。目前的工作描述了用于获取天线结构重要信息的方法，例如馈电的相位中心和平面相位中心以及反射器表面轮廓误差的均方根值。还证明了对近场和远场辐射方向图和平面辐射方向图的准确预测。
A microwave holographic technique for the determination of amplitude and phase of the principal and cross-polarized aperture fields of large reflector antennas is described. The hologram formation process utilizes the elevation over azimuth scanning system normally associated with these antennas, and, in this respect, appears to be unique among other proposed methods of field probing. The present work describes the means used to obtain vital information on the antenna structure such as- and-plane phase centers of the feed, and rms values of the reflector surface profile errors. Accurate prediction of- and-plane radiation patterns in the near- and far-field is also demonstrated.