基于平面相控阵天线单元间距由设定的扫描空域中不出现栅瓣条件确定，分析了在选定矩形栅格和三角形栅格的阵列单元间距后，平面相控阵天线的极限扫描空域，揭示了相控阵天线尚未被充分利用的扫描资源。

The spacing between elements in a planar phased array antenna are determined under no grating lobes in a given scan coverage. In this paper, the utmost scan coverage of the planar phased array antenna is analyzed when the element spacing is chosen for an rectangularly or triangularly arranged array. Meanwhile available scan resources of phased array antennas are developed.

TN821.8