分形在阵列天线中的应用

Application of Fractal in Array Antennas

通过具体的举例与分析 ,运用图表与数据阐述了在阵列天线中使用分形单元的几个有利点 :分形单元的小型化弥补了欧氏几何单元小型化所引起的阻抗不足以匹配 ,有利于减小互耦合 ,降低副瓣幅值 ;小型化也有利于实现线阵的压缩 ,同时通过增大单元数目 。

This paper analyze the advantages of the application of fractal element s in array antennas through figures, tables and data. First ,the miniaturizatio n of fractal elements improves matching characteristics more than Euclidean geom etries does, it also provides decreased mutual coupling and decreased SLL . Anot her advantage is that such miniaturization can effect tighter array packing, and through packing more fractal elements into a linear array, it can provide decre ased center-to-center separation and improved scanning performance.