基于边缘电流法近远场变换中的探头补偿

针对目前平面近远场变换中,探头H面方向图对天线远区副瓣引入误差较大的情况,研究了一种基于边缘电流法近远场变换的探头补偿。通过在微波暗室对某频段阵列天线测量,并分别用传统使用的stratton-chu积分法、E面电场法与边缘电流法进行近远场变换并进行比较。结果表明,此方法相比传统方法,副瓣精度基本接近国际先进水平,远远高于国内现有水平,证明了该方法的有效性和工程实用性,并填补了国内空白。

Probe Correction Based on the Fringe Current Method in Near to Far Field Transformation

The H-plane pattern of probe introduces too much error to the back hemisphere sidelobes in plane near to far field transformation. So an improved method of probe pattern which base on fringe current method is put forward and used in near to far field transformation. An array antenna measured in anechoic chamber, and Stratton-chu integral, the E-field in-tegration method and the fringe current method are used in near to far transformation. The results indicate that by the meth-od, the precision of sidelobes is close to advanced level in the world, and is much higher than present level at home. Also, the method proves accurate and practical, filling a gap in our country.