超表面的极化可重构天线  

A Polarization Reconfigurable Antenna with Metal-surface

作　　者：高宽亮 杨群[1] 曹祥玉[1] 高军[1] 辛晓飞 王帛 

机构地区：[1]空军工程大学信息与导航学院 [2]95985部队

出　　处：《空军工程大学学报（自然科学版）》2015年第6期38-41,共4页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61271100;61471389);陕西省自然科学基础研究项目(2012JM8003)

摘　　要：设计了一种基于超表面的极化可重构天线,该天线由缝隙微带天线及上层超表面组成。通过旋转改变超表面与缝隙微带天线相对位置,能够实现线极化、右旋圆极化、左旋圆极化等不同的极化工作方式。该天线在圆极化状态时,相对阻抗带宽达到32%,右旋和左旋圆极化时3dB轴比带宽均可达到14%;线极化状态时,相对阻抗带宽均可达到10%以上。为了验证仿真结果的有效性进行了天线实物的加工和测试,实测结果与仿真结果吻合较好,进一步验证了该天线具有良好极化可重构特性。In this paper, a polarization-reconfigurable antenna with metal-surface is proposed. The antenna consists of a metal-surface placed atop of a microstrip slot antenna and in direct contact with a microstrip slot antenna. By rotating operation to change the relative position of the metal-surface and slot antenna, the antenna can be reconfigured to realize linear polarization, right hand circular polarization （RHCP） and left hand circular polarization （LHCP）. The results show that the impedance bandwidth can reach 32 ~./0 and 10~ in circular polarizations and linear polarization respectively . in right hand circular polarization and left hand circular polarization 3dB axial ratio bandwidth can both reach 14 %. For verification of simulation re- sults, the antenna is fabricated and measured and the measured results agree with the simulated well. Po- larization reconfiguration for the antenna is demonstrated well.

关 键 词：超表面 缝隙天线 极化可重构 圆极化 线极化 

分 类 号：TN82[电子电信—信息与通信工程]