一种十字形天线阵及其性能研究  

A ‘+' Like Adaptive Antenna Array and Its Performance Simulation

作　　者：郭向涛[1] 高军[1] 张焕梅[1] 曹祥玉[1] 

机构地区：[1]空军工程大学电讯工程学院,西安710077

出　　处：《电信科学》2009年第7期51-56,共6页Telecommunications Science

基　　金：国家自然科学基金资助项目(No.60671001)

摘　　要：本文提出一种智能天线阵列,使用样本相关矩阵直接求逆算法(DMI)通过Matlab仿真得出阵列的方向图,输出信噪比与输入角度及输入噪声幅度的关系图,在同等条件下对阵元数相同的均匀直线阵、均匀圆阵进行仿真,与之对比。比较结果表明其方向图优于均匀直线阵和均匀圆阵,克服了均匀直线阵主瓣波束对称出现干扰信号与期望信号对称于出现时天线不能正常工作的问题;输出信噪比与均匀直线阵相当,优于均匀圆阵;天线尺寸比均匀直线阵大大减小,比均匀圆阵大。A＇＋＇like adaptive antenna array is presented. By using the DMI algorithm, simulation processes of its radiation pattern, signal-to-noise of output signals about input angle and input interference signal strength are compared to the other two antenna arrays（uniform linear array and uniform circular array）. Conclusion is using this antenna array, its radiation pattern is better than the other two, especially can eliminate the case that when input interference signal and expectation signal are symmetry the uniform linear array does not work. Its output signal-to-noise same to uniform linear array, better than uniform circular array. The size of array is smaller than uniform linear array, bigger than uniform circular array.

关 键 词：智能天线 天线阵 方向图 信噪比 

分 类 号：TN820.15[电子电信—信息与通信工程] TP273[自动化与计算机技术—检测技术与自动化装置]