一种X频段双圆极化器的设计

摘要

介绍了一种X频段双圆极化器的设计。设计实例采用方波导和圆波导两种形式,具有结构紧凑、功率容量大、极化轴比小、频带宽和适于星载使用等特点。仿真结果表明：设计出的双圆极化器,隔离度大于29dB,电压驻波比小于1.2,轴比小于0.5dB。该极化器的设计方法可应用于星载X频段双圆极化数传天线的设计。%A design of the X-band dual-circular polarizer is presented.The design examples use square waveguide and circular waveguide shapes,which have the virtues of compact structure,high power,low polarization axial ratio and broadband capability,being suitable for satellites.The simulation results show that the disturbance isolation is higher than 29dB,the voltage standing wave ratio（VSWR） is lower than 1.2,and the axis ratio is lower than 0.5dB.The examples can be used for the design of a dual-circular polarizer on data transmission antenna of X-band.