圆极化方形环缝隙天线的设计  

Design of Circularly Polarized Square-Ring Slot Antenna

作　　者：邢亚龙[1] 高芸[1] 韩丽萍[1] XING Yalong GAO Yun HAN Liping(College of Physics and Electronics Engineering, Shanxi University, Taiyuan 030006, Chin)

机构地区：[1]山西大学物理电子工程学院,山西太原030006

出　　处：《测试技术学报》2017年第1期64-68,共5页Journal of Test and Measurement Technology

基　　金：国家自然科学基金资助项目(61172045);国家基础科学人才培养基金资助项目(J1210036);山西省自然科学基金资助项目(2012011013-3)

摘　　要：本文提出了一个圆极化方形环缝隙天线.通过在天线馈线层引入一个C型寄生单元,使其在环形缝隙的对角处产生微扰,将天线的基模分解成两个幅度相同且相位差为90°的简并模,从而激发圆极化辐射.天线的总尺寸为40mm×40mm×1.6mm.仿真和测量结果表明:天线具有良好的辐射性能.天线的阻抗带宽为22%(2.46~3.07GHz),轴比带宽为2.2%(2.67~2.73GHz).In this paper,a circularly polarized square-ring slot antenna is proposed.AC-shaped parasitic element is introduced In the feed line layer,and the miniature miniature perturbations on the diagonal of the slot are generated,which can split the fundamental mode into two degenerate resonant modes with equal amplitudes and 90°phase-difference for CP performance.In which the radiation of circularly polarization is excited,the total size of antenna is 40mm×40mm×1.6mm.The simulated and measured results show that good radiation performance has been achieved.The impedance bandwidth of the antenna is 22%（2.45～3.07GHz）,and the 3dB axial ratio bandwidth is 2.2%（2.67～2.73GHz）.

关 键 词：缝隙天线 圆极化 寄生单元 阻抗带宽 轴比 

分 类 号：TN821.3[电子电信—信息与通信工程]