一种船用BDS/GPS双频四臂螺旋天线  

A Marine BDS/GPS Dual Frequency Four-armed Helical Antenna

作　　者：宋璐 常勇猛 丁思宇 王宇昊 赵建森[1] 

机构地区：[1]上海海事大学商船学院,中国上海201306

出　　处：《科技视界》2017年第26期16-17,共2页Science & Technology Vision

基　　金：国家自然科学基金(51709167);上海市曙光计划(15SG44);上海大学生创新创业训练项目(CXS201601002)

摘　　要：设计了一种双频自相移式四臂螺旋天线模型,并进行了加工,结合仿真与实验分析了该天线的阻抗、增益、方向性等参数。仿真结果与实验结果具有较好的一致性,该天线主瓣波束宽度可以达到160°,且旁瓣很小。另外,该四臂螺旋天线在大仰角范围内具有良好的右旋圆极化性能。天线可以进行从1.2 GHz和1.8 GHz双频通信,各个频段的带宽约为60 MHz。A dual-frequency self-phase shifting quadrifilar helix antenna model is designed and processed. The impedance, gain, directivity and other parameters of the antenna are analyzed by simulation and experiment. The simulation results are in good agreement with the experimental results. The beam width of the main lobe of the antenna can reach160 ° and the side lobe is small. In addition, the quadrifilar helical antenna has good right-handed circular polarization performance at a wide range of elevation angles. Antennas can perform dual-band communications from 1. 2 GHz and 1. 8 GHz with bandwidths of approximately 60 MHz in each band.

关 键 词：四臂螺旋天线 可控性 北斗 

分 类 号：U665[交通运输工程—船舶及航道工程]