星载高增益圆极化小型微带天线阵列  

Design of small high-gain circularly-polarized microstrip antenna array for satellite communication system

作　　者：金宇婷 邢斯瑞 孙伟 Jin Yuting;Xing Sirui;Sun Wei(Chang Guang Satellite Technology Co.,Ltd.,Changchun 130000,China)

机构地区：[1]长光卫星技术有限公司,吉林长春130000

出　　处：《电子技术应用》2020年第5期59-62,73,共5页Application of Electronic Technique

摘　　要：针对卫星X波段通信系统的需求,设计一种新型星载高增益圆极化小型微带天线阵列。新型微带方形贴片单元采用侧馈的馈电方式,利用切角技术实现圆极化,开槽技术实现小型化,天线阵列采用多层馈电网络实现阻抗匹配,圆形分布实现阵列小型化和辐射性能最优化。通过电磁仿真软件仿真优化天线阵列,结果表明:在中心频点8.2 GHz处回波损耗小于-25 dB,10 dB带宽为2.6%,增益为16.2 dB,半功率波瓣宽度为23.6°,轴比为1.65 dB。经加工测试结果与仿真结果基本一致。该天线对X波段无线通信系统设计有一定指导意义。A novel small high-gain circularly polarized microstrip antenna array is designed for satellite X-band communication system.The square antenna cell is fed by side-feed,circular polarization is realized by using corner cutting and miniaturization is realized by slotting technology.Multi-layer feeding network is used for antenna arrays in order to match impedance,the circular distribution of multiple cells achieve good performance including miniaturization of size and optimal radiation performance.Based on the above aspects,an antenna array with 8 microstrip cells is simulated and optimized by simulation software,results show that the antenna array has the return loss under-25 dB at the center frequency 8.2 GHz,the 10 dB-bandwidth of 2.6%,the gain of 16.2 dB,the half-power bandwidth of 23.6°,and the axis ratio of 1.65 dB.The measured results and the simulation results match well.The antenna has certain guiding significance for the design of X-band wireless communication system.

关 键 词：高增益 圆极化 小型化 微带天线阵列 

分 类 号：TN82[电子电信—信息与通信工程]