适于一维相控阵宽角扫描的非对称单脊波导裂缝线源

Asymmetric Ridge Waveguide Slot Linear Array for One Demension Wide Angle Scan Phased Array

非对称单脊波导裂缝线源是新型的一维相控阵天线辐射单元,由这种单元垂直放置构成的平面相控阵天线在水平面可实现宽角(±60°)扫描,在波束扫描时,还可以避免寄生副瓣的出现。同时,这种单元本身在垂直面易于实现较低的副瓣电平。本文从理论和实验上对非对称单脊波导裂缝阵天线进行了研究,解决了这种线源设计过程中的基本理论和关键技术,16单元样品线源远场实验结果与理论值的一致性说明了本文的理论分析和实现途径是正确有效的。

Asymmetric ridge waveguide slot linear array is a novel linear array radiating element for phased array antenna. The phased array can scan to wide angle (±60°) in azimuth , and can eliminate undesired secondary beams when scanning,which consists of many vertical asymmetric ridge waveguide slot linear array elements. And at same time,the linear array can easily obtain low side-lobe. The theoretical and experimental study for the linear array is presented in this paper. The basic theory and key technique for its design is given also. An experimental sixteen-slot array is tested under the far field. Good agreement of tested results with the theory validates the theoretical analysis and the design procedurce.