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本文研究了一种工作在Ku和K波段应用于雷达天线罩的圆极化变换器,线-圆极化变换器通过在天线辐射前方添加多层极化变换层,可使天线辐射的线极化波转换为圆极化波,由此可实现雷达发射圆极化电磁波的目的.极化变换层工作原理是对入射电磁波的平行分量滞后垂直分量超前从而实现圆极化,其主要通过把印刷电路板上的金属层腐蚀成金属栅格线.与传统线-圆极化变换器相比,新型线-圆极化变换器能有效实现小型化,在军事上拥有实际应用价值.
In this paper, we study a circularly polarized converter that is used in radomes in the Ku and K bands. The linear-circular polarization converter adds a multi-layer polarization conversion layer in front of the antenna radiation to make the antenna radiation pole The wave is converted into a circularly polarized wave, so that the purpose of transmitting a circularly polarized electromagnetic wave by the radar can be realized. The working principle of the polarized wave transforming layer is to realize the circular polarization by lagging the vertical component of the parallel component of the incident electromagnetic wave, The metal layers on the circuit board are etched into metal grid lines, which can be effectively miniaturized compared with the conventional line-to-circular polarization converter and have practical application value in the military.