CPW馈电宽带圆极化缝隙天线的设计与实现  

Design and Implementation of Wideband Circularly Polarized Slot Antenna with CPW-Fed

作　　者：刘宗全[1] 钱祖平[2] 韩振平[1] 倪为民[3] 冯卫华[1] 

机构地区：[1]解放军理工大学通信工程学院研究生1队,江苏南京210007 [2]解放军理工大学通信工程学院卫星通信系,江苏南京210007 [3]解放军理工大学通信工程学院训练部,江苏南京210007

出　　处：《军事通信技术》2011年第3期76-79,共4页Journal of Military Communications Technology

基　　金：国家自然科学基金资助项目(60872046)

摘　　要：文章设计出了一种共面波导馈电的宽带圆极化缝隙微带天线。该天线通过共面波导(CPW)端口伸出的激励条带和矩形缝隙侧边的枝节实现圆极化辐射,通过矩形槽以及激励条带和微扰枝节的渐变设计,拓宽了阻抗带宽。借助于仿真软件对天线参数进行优化设计,并在此基础上制作了实物。测试结果表明,所设计天线驻波比(VSWR)小于2的带宽达到89.7%,轴比(AR)小于3 dB的带宽达到21.2%,满足了多种场合的使用需求。A wideband circularly polarized slot antenna fed by coplanar wave-guide （CPW） was designed. The proposed antenna realized circularly polarized radiation by a branch at a side of the rectangle slot comparing with the feeding strip protruded from the CPW port. The bandwidth was greatly increased by the embedded rectangle slot and tapered feeding strip and branch. The parameters of the antenna were optimized by the simulated software, and an antenna manufactured based on the simulation. The measured results show that the 89.7%（VSWR （2） bandwidth and 21.2% （AR 〈 3 dB） axial ratio bandwidth are achieved respectively and the proposed antenna can meet the needs of various occasions.

关 键 词：宽带天线 圆极化 共面波导馈电 

分 类 号：TN82[电子电信—信息与通信工程]