Polarizer as an important assembly part of feed subsystem is widely used in antenna systems. A novel dual-band(C band 5. 15-5. 25GHz,6. 7GHz-7. 075GHz) square quad-ridge polarizer is designed in this paper. It is shown in simulations that VSWR is less than 1. 14, axial ratio is less than 0. 42dB in the specified frequency band.%极化器是天线馈电系统中的重要部件。文章设计了一种新的双频( C频段,5.15~5.25 GHz,6.7~7.075 GHz)四脊波纹方波导圆极化器,该圆极化器的端口驻波小于1.14,工作带宽内轴比小于0.42 dB。
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