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本文介绍了一种由线源和频率扫描反射栅(使其构成圆柱形反射器)组成的频率扫描天线的理论和实验结果。所考虑的原理是选择栅的几何形状,使一次绕射波传播,并充当频率扫描波束。文中介绍了能提供线聚焦的圆柱形反射器几何形状的解析解。所考虑的栅结构由设置在接地平面上面的偶极子阵组成。文中讨论了用来实现最佳激励,即实现由入射波到绕射波的最佳功率转换的偶极子栅的设计方案;采用了弗洛奎特定理和矩量法进行理论分析。
This paper presents a theoretical and experimental result of a frequency-swept antenna consisting of a line source and a frequency-swept reflector (making it a cylindrical reflector). The principle considered is to choose the geometry of the gate to propagate the primary diffraction wave and act as a frequency sweep beam. In this paper, an analytical solution of cylindrical reflector geometry that provides line focusing is presented. The gate structure considered consists of a dipole array arranged above the ground plane. In this paper, we discuss the design scheme of dipole grid to realize the best excitation, that is, the best power conversion from incident wave to diffracted wave. The theory of Floyd and MoM is used to analyze the theory.