小型化双频带左旋圆极化四臂螺旋天线  

Miniaturized Dual-band Left-handed Circularly Polarized QuadriHlar Helix Antenna

作　　者：李杨 周世钢 Li Yang;Zhou Shigang(Northwestern Polytechnical University,Xi'an,710129)

机构地区：[1]西北工业大学电子信息学院,西安710129

出　　处：《测控与通信》2019年第4期6-9,13,共5页

摘　　要：本文提出了1款在1.98~2.01 GHz及1.17~2.22 GHz工作的双频带左旋圆极化定向天线。天线采用双四臂螺旋结构作为辐射单元,底端采用顺序旋转馈电实现宽角圆极化。采用多层高介电介质板结构,综合设计天线馈电网络,解决了馈电网络尺寸过大的问题。天线直径12 mm,高度86 mm,利用HFSS软件对天线进行仿真和优化。最终仿真结果表明天线在1.98~2.22 GHz频带内电压驻波比小于2.0,±30°内增益大于2.2 dB,此天线可用于小型化手持天通设备。This paper proposes a dual-band left-handed circularly polarized directional antenna operating at 1.98~2.01 GHz and 1.17~2.22 GHz.The antenna adopts a double quadrifilar spiral structure as a radiating element,and the bottom adopts sequential rotary feeding to realize wide-angle circular polarization.The multi-layer high dielectric plate structure is adopted to comprehensively design the antenna feed network,which solves the problem of excessive size of the feed network.The antenna has a diameter of 12 mm and a height of 86 mm.The antenna is simulated and optimized using HFSS software.The final simulation results show that the antenna has a voltage standing wave ratio of less than 2.0 in the 1.98~2.22GHz band,and the gain is greater than 2.2dB within±30°.This antenna can be used to miniaturize handheld Tiantong devices.

关 键 词：双频带 左旋圆极化 小型化 四臂螺旋天线 

分 类 号：TN8[电子电信—信息与通信工程]