摘要
阵列天线广泛应用于多目标、多任务雷达系统中。构建直线阵列、平面阵列天线的数学模型,借助Matlab对不同模型的阵列天线方向图进行了仿真计算。分析了一维阵列和二维阵列阵元个数、阵元间距以及阵元位置等因素对方向图的影响。仿真结果表明:一维阵列天线性能并非天线数目越多越好,还需要考虑副瓣电平对天线性能的影响;二维阵列天线当采用相同的阵元个数时,不同的阵元间距对主瓣宽度和副瓣电平都有影响。
Array antenna is widely used in multi⁃target and multi⁃task radar system.The mathematical models of linear and planar array antennas are constructed.The simulation calculation for array antenna radiation patterns of different model are carried out with Matlab.The influence factors such as antenna quantity of one⁃dimensional and two⁃dimensional arrays,separation distance,and location of array elements which affect the radiation pattern are analyzed.The simulation results show the performance of the one⁃dimensional array antenna not only depend on antenna quality,but also need to consider the influence of the side lobe level on antenna performance;when two⁃dimensional array antenna has same array elements,the different separation distance of array elements has an influence on both main lobe width and side lobe level.
作者
李沙
颜毅华
王威
陈志军
LI Sha;YAN Yihua;WANG Wei;CHEN Zhijun(State Key Laboratory of Space Weather,National Space Science Center,CAS,Beijing 100190,China)
出处
《现代电子技术》
2023年第7期1-4,共4页
Modern Electronics Technique
基金
国家自然科学基金项目(11903055)
联合基金(U1931127)。
关键词
阵列天线
波束合成
天线数学模型
仿真计算
天线方向图
阵元间距
影响因素分析
array antenna
beam forming
antenna mathematic model
simulation calculation
antenna radiation pattern
arrey element separation distance
influence factor analysis
