平面圆极化磁电偶极子天线设计  

Design of planar circularly polarized magneto-electric dipole antenna

作　　者：王加龙 冯立营 WANG Jialong;FENG Liying(School of Electronic Engineering,Tianjin University of Technology and Education,Tianjin 300222,China)

机构地区：[1]天津职业技术师范大学电子工程学院,天津300222

出　　处：《天津职业技术师范大学学报》2023年第1期50-53,共4页Journal of Tianjin University of Technology and Education

基　　金：天津市企业科技特派员项目(21YDTPJC00210).

摘　　要：设计了一种小尺寸平面结构的圆极化(CP)磁电偶极子(ME)天线。该天线由印刷在介质基板上的1/4波长短路贴片与一对平行的电偶极子臂相连组成。天线通过同轴探针进行馈电,短路片最大开口的切向电场可等效为磁流,与电偶极子臂上的电流的相位差约为90°,可获得圆极化的定向辐射模式。通过ANSYS HFSS电磁仿真软件仿真结果表明:|S_(11)|≤-10 dB的阻抗带宽为6.9%(5.57~5.97 GHz),有效带宽内增益为4.15~4.66 dBi,轴比均小于3 dB。天线尺寸较小,结构简单,易于制造,可用于现代无线通信。A circularly polarized(CP)magneto-electric(ME)dipole antenna with a small planar structure is designed,which is composed of a quarter wavelength short-circuit patch printed on the dielectric substrate and a pair of parallel electric dipole arms. The antenna is fed through the coaxial probe. The tangential electric field at the largest opening of the short circuiting sheet can be equivalent to the magnetic current, and the phase difference with the current on the electric dipole arm is about 90°. Thus, a circularly polarized directional radiation model can be obtained. The results of ANSYS HFSS, an electromagnetic simulation software, show that the impedance bandwidth with | S_(11)|≤-10 dB for the antenna is 6.9%(5.57-5.97 GHz). The available gain within the impedance bandwidth is 4.12-4.66 dBi, and the axial ratio is less than 3 dB. The antenna has the advantages of small size, simple structure, and easy manufacturing, and it can be used for modern wireless communication.

关 键 词：圆极化天线 磁电偶极子天线 平面天线 

分 类 号：TN821.4[电子电信—信息与通信工程]