新型可重构临近耦合偶极子天线阵  

A Novel Reconfigurable Coupling Feed Dipole Antenna

作　　者：谢倩倩[1] 周永刚[1] 欧阳伟忠 李博南[1] 

机构地区：[1]南京航空航天大学电子信息工程学院,江苏南京210000

出　　处：《电子科技》2015年第7期28-30,33,共4页Electronic Science and Technology

摘　　要：提出了一种可重构的临近耦合印刷偶极子天线阵。其通过控制每个振子的间距和振子偏移中心馈线的距离实现方向图的改变,提出的可重构天线阵,将形成不同方向图的偶极子天线阵嵌套排布,并通过pin管开关切换不同的偶极子辐射单元组,从而实现天线方向图的重构,改变天线的最大辐射方向。仿真结果表明在9.8 GHz的中心频点上,该天线可实现最大辐射方向在0°和40°上切换:波束指向为0°方向时,最大增益为12 d Bi;为40°时,最大增益为8.7 d Bi,两种工作状态下天线输入端s11均优于-30 d B,匹配良好。A novel reconfigurable proxy-coupled printed dipole antenna array is presented. The radiation pattern can be switched by controlling the distance of each dipole and distance between every dipole and the main feed line. The antenna array can form dipole antenna array nesting arrangement of different radiation patterns,and can transfer to different dipole radiation elements via pin switch,leading to the reconfiguration of the radiation pattern and diversity of maximum radiation direction. The simulation results show that the antenna can obtain the maximum radiation direction at 0° and 40° at the center frequency of 9. 8 GHz,and the maximum gain is 12 d Bi at 0° and8. 7 d Bi at 40°; the input reflection coefficient under either working state is lower than- 30 d B,showing a perfect impedance matching.

关 键 词：临近耦合馈电 偶极子天线 可重构 波束扫描 

分 类 号：TN823.24[电子电信—信息与通信工程]