【作者】 徐玮； 顾长青；

【Author】 Xu wei;Gu changqing;College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics;

【机构】 南京航空航天大学电子信息工程学院；

【摘要】 设计了一种适用于GPS(1.575GHz)和DSRC(5.8GHz)工作的双频圆极化微带天线。采用不同大小的切角方形贴片天线的堆叠实现双频圆极化,底层贴片对角开4个相等的槽缩小其尺寸。采用单馈点馈电结构,通过调节馈点位置、平移顶层贴片以及改变底层过孔大小实现两个频带内的阻抗匹配。使用HFSS软件对天线结构进行仿真和优化,仿真结果表明,该天线在双频段内有着良好的阻抗匹配、轴比以及辐射方向图,能够满足设计需求。更多还原

【Abstract】 In this paper,a dual-band circularly polarized microstrip antenna applied in GPS(1.575GHz) and DSRC(5.8GHz) is presented.Stacking two different corner-truncated square patch antennas is designed for dualband and circularly polarized,and the bottom patch with four equal slits for size reduction.The antenna is excited by single-feed,and the impedance matching in both band is achieved by adjusting the feed position.shifting the top patch,and changing the size of via hole in bottom patch.The software HFSS is employed for simulation and optimization.Results show good performance on impedance matching,axial ratio and radiation pattern,which can meet the requirement.更多还原