【作者】 林澍； 韩雪； 李文军； 杨彩田； 邱景辉； 王进祥；

【Author】 Lin Shu1,2 Han Xue2 Li Wen Jun2 Yang Cai Tian2 Qiu Jing Hui2 Wang Jinxiang3 (Electronic Science and Technology post-doctoral research center, Harbin Institute of Technology, Harbin, 150080, China)1;(School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin, 150080, China)2; (Department of Microelectronics Science and Technology, Harbin Institute of Technology, Harbin, 150080, China)3

【机构】 哈尔滨工业大学电子科学与技术博士后科研流动站； 哈尔滨工业大学电子与信息工程学院； 哈尔滨工业大学微电子科学与技术系；

【摘要】 研究了一种单馈点右旋圆极化双频微带天线。通过双层贴片实现双频,微带贴片采用Crown方形分形结构,通过激励起两个相互正交的简并模实现圆极化。采用CSTMWS软件进行仿真,结果表明在微带贴片的对角线临近区域用探针馈电,可以实现圆极化辐射。用FR4材料做介质基片制作了天线实物并进行测试,该双频天线在1.616GHz和2.49GHz两个频点处,阻抗带宽(VSWR<2)为2.4%,6dB轴比带宽为2%,增益0dB以上,实验结果与仿真结果基本吻合。更多还原

【Abstract】 A right circular-polarization and dual-frequency microstrip antenna with single feeding point is presented. Double-patch is used to achieve dual-frequency. The microstrip patch has Crown fractal structure which generates two orthogonal modes to realize circular polarization. The antenna is simulated on the software CST MWS. The simulation results show that the antenna can realize the characteristic of circular-polarization with the feeding position around the diagonal line of the patch. The antenna is manufactured on FR4 board and measured. The experimental results show that the antenna work at 1.616GHz and 2.49GHz, the impedance bandwidth (VSWR <2) up to 3%, 6dB axial ratio bandwidth of 2%, gain more than 0dB, the experimental results coincide with the simulation results.更多还原