振子阵列天线的雷达截面积

本文用矩量法,对大型平面阵列和圆阵柱阵列天线在不同加载情况下的散射进行了研究。在考虑振子互耦情况下,计算出振子上的电流分布,并得到阵列的雷达截面积(RCS)。实验结果表明,理论值与实验值两者基本趋势一致。文中采用的平面阵加截和共形曲面阵技术,可大幅度地缩减振子阵列天线的RCS,具有实际的工程意义。

RADAR CROSS-SECTION ANALYSIS OF DIPOLE-ARRAY ANTENNAS

The study of the back scarering from a planar or cylindrical array of loaded dipoles is presented. The current distribution on the dipoles and the radar cross-section (RCS) of the array in consideration of the interaction among dipoles are obtained by the moment method. Theoretical results are compared with the measured ones, and good agreement is achieved. The loading array technique and the curved surface array technique would greatly reduce the RCS of an array, which would be valuable for engineering applications.