介绍了均匀介质球透镜天线基本特点;仿真分析了单馈源时均匀介质球透镜天线的辐射性能;在单馈源的基础上,仿真分析了8馈源时的辐射性能。根据仿真结果加工了均匀介质球透镜,同时设计制作了包括16个圆波导的馈电网络以及馈电网络的数字控制器。在馈电网络中16个圆波导沿介质球周围成弧形排成上下2层,每层8个。通过同一层上的馈电单元之间的切换实现水平扫描,而通过切换不同层上的馈电单元实现垂直扫描。实测结果表明均匀介质球扫描天线性能良好。%The basic feature of the homogeneous spherical lens is introduced.The homogeneous dielectric spherical lens with single-feed is analyzed and simulated and its performance is good.Based on the lens with single-feed,the homogeneous dielectric spherical lens with eight-feed is simulated.According to the simulation results,the homogeneous dielectric spherical lens is fabricated.The feeding network including 16 circular waveguides and its controller are also designed.The 16 circular waveguides form an array of 2×8 around the lens,and the beam scanning in azimuth and elevation can be achieved by switching the feeding circular waveguide in the same layer and different layers respectively.The measurement results show that the performances of the antenna are good and well agree with the simulation.
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