Ku波段宽频带双极化微带天线阵的设计  

Design of a broadband and dual-polarized microstrip array antenna at Ku band

作　　者：王宇[1,2] 姜兴[1,2] 李思敏[1,2] 

机构地区：[1]桂林电子科技大学通信与信息工程学院,广西桂林541004 [2]桂林电子科技大学校长办公室,广西桂林541004

出　　处：《电波科学学报》2008年第2期276-279,共4页Chinese Journal of Radio Science

基　　金：广西研究生教育创新基金资助项目(2007105950809M10)

摘　　要：综合运用了口径耦合的馈电方式、不同介电常数基片及双层贴片结构展宽了微带天线的频带,设计出一种用于Ku波段双极化宽带微带天线单元。并由该单元组成了四单元微带天线阵,制作了实验模型。测量的结果表明,两端口VSWR<1.5的相对阻抗带宽分别为21%和20.7%,隔离度大于17dB,与仿真结果一致。Aperture-coupled feeding, different dielectric constant＇s substrate and the stacked patch structure are used to enhance the bandwidth of microstrip antenna, a broadband and dual-polarized microstrip antenna unit at Ku band is designed. By using the unit designed, a 4-element array antenna is fabricated and tested. The measured results by network analyzer show that the relative impedance bandwidth of two ports （VSWR is less than 1.5） is 21% and 20.7% , respectively, and isolation degree is higher than 17 dB, which are good agreement with the simulation results.

关 键 词：KU波段 宽带 双极化天线 

分 类 号：TN965.2[电子电信—信号与信息处理]