中波圆形直立相控阵天线仿真设计

摘要

Aiming at the problem that the propagation distance of ground wave radiated by mid-wave vertical antenna can not suit the long-distance communication.The phased array is proposed to improve the gain of ground wave radiated by mid-wave vertical antenna.The model of mid-wave vertical antenna circular phased array, with eight elements and by using 76 m vertical antenna as element antenna, is realized by electromagnetic simulation software FEKO and MATLAB.On this basis, the modeling and simulation of 25 m, 50 m,75 m, 100 m, 125 m cicular-phased arrays is further done, and get their patterns and gains acquire. The influence of different radiuses on the pattern and gain of 8-yuan medium-wave vertical phased-array antenna is analyzed.%针对中波天线在地波传播过程中传播距离较短、衰减较大的问题,提出采用相控阵的组阵方式来提高中波天线的地波辐射增益.通过电磁仿真软件FEKO和MATLAB软件的混合编程,以76 m直立天线作为单元天线,成功实现了八元中波圆形相控阵的建模仿真.在此基础上,进一步建模仿真了25 m、50 m、75 m、100 m、125 m等五种不同半径的圆形阵、方向图和组阵增益,同时分析了不同半径对八元中波直立相控阵天线方向图和增益的影响.