Calculation of antenna radiation center using angular momentum
Calculation of antenna radiation center using angular momentum
复制标题
利用角动量计算天线辐射中心
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
G. Kristensson
中科院分区：
文献类型：
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作者：
J. Fridén;G. Kristensson
提出了一种基于球面波展开（SWE）的天线辐射中心计算算法。该方法基于为任何天线远场方向图唯一定义的角动量矢量。辐射中心被定义为角动量大小相对于远场的主动平移最小化的独特点。这对应于最小化天线远场方向图的相位变化。此外，可以确定电流分布轴，对应于角动量相对于旋转的垂直分量的最小化。
An algorithm to compute the radiation center of an antenna based on the Spherical wave expansion (SWE) is presented. The method is based on the angular momentum vector quantity that is uniquely defined for any antenna far field pattern. The radiation center is defined as the unique point where the magnitude of the angular momentum is minimized with respect to active translations of the far field. This corresponds to minimizing the phase variations in the antenna far field pattern. In addition, the current distribution axis can be determined, corresponding to minimization of the vertical component of angular momentum with respect to rotations.