超低副瓣偶极子相控阵互耦的研究

Study on Mutual Coupling of Ultralow Sidelobe Dipole Phased Arrays

本文首次提出了从网络定义出发求偶极子阵列天线单元间互阻抗的方法,然后提出了用互阻抗矩阵来补偿单元间互耦的方法。计算结果表明:在扫描角不太大的情形下,用本文提出的互耦补偿方法是有效的。并在此基础上讨论了互耦对单元上电流分布规律的影响以及对副瓣电平的影响,为实现超低副瓣相控阵提供了详细的分析依据。

The mutual coupling of ultralow sidelobe dipole phased arrays is carefully investigated in this paper. A method obtaining the mutual impedances between elements of dipole arrays is first presented by use of network definition. The compensation for mutual coupling using mutual impedances obtained here is discussed. The calculation results show that this compensation method is valid. The effect of mutual coupling upon current distribution on elements of arrays and upon the sidelobe level is also discussed in this paper. These provide theoretical basis for realizing ultralow sidelobe phased arrays.