文中提出一种基于能量传输理论的非谐振波导缝隙阵列设计方法,设计了一款右旋圆极化非谐振波导缝隙阵列天线。圆极化由加载在波导缝隙上的切角正方形波导圆极化腔实现,文中分析了腔体的各设计参数对圆极化特性的影响,实现了圆极化腔与波导缝隙的分离设计。设计的 8×8 阵列天线工作在 17 GHz,主频处能量辐射效率大于 94 ,主瓣增益25.71 dB,主瓣最低轴比 1.45 dB,在3 dB 波束宽度内轴比均小于3 dB。

A design method of non-resonant slotted waveguide array based on energy transmission theory is proposed, and a righthanded circular-polarized non-resonant slotted waveguide antenna array is designed. Circular polarization is realized by the cornercut square waveguide cavity, which is loaded on the waveguide. The influence of cavity parameters on the circular polarization characteristics is analyzed, and the separation design of circular polarization cavity and slotted waveguide is realized. The designed 8×8 antenna array operates in 17 GHz with more than 94% radiation efficiency, 25. 71 dB main-lobe gain, and 1. 45 dB main-lobe minimum axial ratio. The axial ratio in main pattern is lower than 3 dB.

TN821+. 8