圆极化十字交叉振子馈源设计与实现  

Design and Realization of Circular Polarized Crossed Dipole Feeds

作　　者：曹海林[1] 易念学[2] 杨力生[1] 杨士中[1] 

机构地区：[1]重庆大学通信工程学院,重庆400030 [2]中国航天科技集团公司第504研究所,陕西西安710061

出　　处：《重庆大学学报（自然科学版）》2005年第10期70-74,共5页Journal of Chongqing University

基　　金：重庆市院士基金资助项目(7555)

摘　　要：由于圆极化天线不需要复杂的跟踪系统就可获得较好的极化匹配,现代许多卫星和地面的点到点通信为了在链路预算中使极化效率最大化,都使用了圆极化电波来传输.笔者对线性天线的自阻抗进行了分析,给出了十字交叉振子圆极化馈源的有效设计方法,采用一种开槽的单馈线激励十字交叉振子,并给出了适用设计的曲线.且采用电磁场仿真软件HFSS,计算了振子圆极化馈源的增益和圆极化轴比,仿真结果表明设计实用、可行.The polarization match between the antennae operated in the circular polarization mode can he maintained well without the use of complex tracking systems, many modem satellite and terrestrial point-to-point communications systems use circular polarization （CP） wave propagation in order to maximize the polarization component of the link budget. The effective design method of circular polarized crossed dipole feeds is presented analyzing the self-impedance of linear antennas and the useful design curves also is given here, the crossed dipoles is excited by a single hard coaxialcable with a slot. The gain and circular polarized axial-ratio of the crossed dipoles is calculated with the electromagnetic simulation software HFSS, the results indicate that the design is reasonable and practical.

关 键 词：十字交叉振子 背射天线 圆极化 增益 轴比 

分 类 号：TN822.4[电子电信—信息与通信工程]