设计了一种工作于P,L 波段多波束天线阵，形成的9 个波束在方位面实现90°空域范围覆盖。多波束通过模拟延迟线构成的移相网络实现，同时运用小型化技术将移相网络集成到功分网络中。通过印制电路板工艺实现各馈线所需的相移值。阵列单元采用印刷对数周期天线形式，同时在阵列安装座底板上粘贴吸波材料，进而显著缩减了阵列在X,Ku 波段的雷达散射截面(RCS)。理论仿真分析及实验测量结果证明，该天线阵不仅具有宽频带、波束方向图特性良好，而且方位面180°范围内平均RCS 小于16 m²，满足系统设计要求。

A multibeam antenna array at P and L bands is proposed，covering the 90°space range in the azimuth. The multibeam can be acquired by phase shifter network that consists of analog delay lines， and the phase shifter network is integrated with power divider network by using miniaturization techniques. The phase shift values are realized by Printed Circuit Board(PCB) process. The Radar Cross Section(RCS) reduction of the antenna array is realized at X and Ku bands， by adopting Log Periodic Dipole Antenna(LPDA) element and pasting the absorbing material to the bottom surface of the array installation. Theoretical analysis and measurement results show that the array is with the features of broadband and multibeam radiation pattern. At the same time, the average RCS is less than 16 m² within 180°space in the azimuth, which satisfies the requirements of the system design.