相参阵列辐射的远场分析

The Far-Field Analysis for Coherent Array Radiation

研究了多个阵元在辐射相同单频信号时可能产生的效果,仅是阵列在电子信息传递中所起作用的一部分研究。可以用信号的强度和发射方向来表示合成电磁场远场效果,它们都是阵列馈电的函数。分析表明,合成电磁场可以表现为信号来自阵列所占方向跨度中的某一点,也可以表现为来自这个跨度外的某一点。具体地给出了这种阵列外虚假源的一般规律。

We study the fundamental function of an array for electronic information transferring,regarding the effect of the array radiating the same signals of single frequency.When receiving the electromagnetic field in far-field,the effects are the intensity and the coming direction of the wave;they are functions of the feeding.The analysis shows the virtual source can locate within the array or out of the array.The key principles of the array concerning such virtual source are given.