基于超表面的圆极化印刷偶极子天线研究  

Circularly polarized printed dipole antenna based on metasurface

作　　者：过勐超 屈绍波[1] 马华[1] 王甲富[1] 沈杨[1] 

机构地区：[1]空军工程大学理学院,陕西西安710051

出　　处：《电子元件与材料》2015年第12期53-56,共4页Electronic Components And Materials

基　　金：国家自然科学基金资助(No.61331005;No.61471388);全国优秀博士学位论文作者专项资金资助(No.201242);陕西省创新团队资助(No.2014KCT-05)

摘　　要：利用一种以双头箭头作为结构单元的反射型极化旋转超表面,设计了圆极化的印刷偶极子天线。通过将该超表面加载在普通印刷偶极子天线的下方,使线极化的偶极子天线辐射圆极化波。测试表明,天线的圆极化工作带宽为6.96 GHz到7.13 GHz。在7.04 GHz处,垂直方向上的轴比达到约1 d B。该天线有着较好的圆极化效果,并且实现了低剖面以及小型化。A circularly-polarized printed dipole antenna was designed by using a reflection-type polarization conversion metasurface which has a double-head arrow structure. This metasurface structure made linearly-polarized dipole antenna to radiate circularly-polarized waves. The measured results show that the circularly-polarized working bandwidth of the antenna is from 6.96 GHz to 7.13 GHz. An axial ratio of about ldB is obtained at 7.04 GHz in the vertical direction. This kind of antonna has a good circularly-polarized effect and it realizes low profile and miniaturization.

关 键 词：超表面 极化旋转 印刷偶极子天线 圆极化 低剖面 轴比 

分 类 号：TN822[电子电信—信息与通信工程]