Ka波段卫星通信四元微带天线阵的研制  

A microstrip patch array for Ka-band satellite applications

作　　者：李树[1] 姜兴[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《桂林电子科技大学学报》2010年第1期1-4,共4页Journal of Guilin University of Electronic Technology

基　　金：广西研究生教育创新基金资助项目(2009105950809M09)

摘　　要：针对口径耦合微带天线的特点,设计了一种用于Ka波段卫星通信的四单元微带天线阵。为了改善天线的辐射性能,采用口径耦合的方式馈电,引入双层悬置贴片和空气层展宽了天线带宽,并利用低介电常数薄介质基片有效抑制了表面波损耗。用CST软件进行仿真和优化。实物测试结果表明在设计频带范围内,该天线具有较小的回波损耗,较低旁瓣,增益明显高于同类天线,且结构简单,易于制作和组阵,具有较高实用价值。A 4-element microstrip antenna array operating at Ka-band for satellite communication is researched. To improve radiation performance, aperture-coupled feeding, stacked patches structure and inserting of the air layer technologies are adopted to achieve wider bandwidths. Low dielectric and thin material is chosen to achieve inhibi- tion consumption of surface wave. The parameters of antenna are simulated and optimized by using CST tools. The experimental results show that the microstrip antenna possesses certain practical value because of the point of low return loss, low side lobe, high gain, simple structure and easy to be fabricated in the design band.

关 键 词：KA波段 宽带 微带阵列天线 缝隙耦合 输入阻抗 

分 类 号：TN828.5[电子电信—信息与通信工程]