平面近场测量中有探头补偿的坐标系之间的变换

Probe-Compensated Coordinate Transform in Planar Near-Field Measurement

天线方向图及其参数(如波束指向,最大副瓣等)都是建立在特定的坐标系上的。天线测量中,经常需要在各种坐标系之间进行变换,因此对此加以研究有一定的必要性。本文分析了带探头补偿近远场变换中的远场公式在常用的三种坐标系之间的变换,并将计算结果与实测数据相比较,证实了变换公式的准确性。

Antenna pattern and its parameters（such as beam steering,maximum side-lobe,etc.） are all established in a specific coordinate system.During antenna measurement,it is necessary to transform between various coordinate systems frequently.Conversion of far-field equation in generally used three coordinate systems is analyzed in probe-compensated coordinate transform between far-field and near-field.Comparison between computation result and actual experiment data shows that the transform is accurate.