电信科学 ›› 2009, Vol. 25 ›› Issue (7): 51-56.doi: 10.3969/j.issn.1000-0801.2009.07.015

• 研究与开发 • 上一篇    下一篇

一种十字形天线阵及其性能研究

郭向涛,高军,张焕梅,曹祥玉   

  1. 空军工程大学电讯工程学院 西安 710077
  • 出版日期:2009-07-15 发布日期:2009-07-15
  • 基金资助:
    国家自然科学基金资助项目

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

Xiangtao Guo,Jun Gao,Huanmei Zhang,Xiangyu Cao   

  1. Te1ecommunication Engineering Institute，Air Force Engineering University，Xi’an 710077，China
  • Online:2009-07-15 Published:2009-07-15

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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Mat1ab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。

关键词: 智能天线, 天线阵, 方向图, 信噪比

Abstract:

A‘+’1ike adaptive antenna array is presented.By using the DMI a1gorithm，simu1ation processes of its radiation pattern，signa1-to-noise of output signa1s about input ang1e and input interference signa1 strength are compared to the other two antenna arrays（uniform 1inear array and uniform circu1ar array）.Conc1usion is using this antenna array，its radiation pattern is better than the other two，especia11y can e1iminate the case that when input interference signa1 and expectation signa1 are symmetry the uniform 1inear array does not work.Its output signa1-to-noise same to uniform 1inear array，better than uniform circu1ar array.The size of array is sma11er than uniform 1inear array，bigger than uniform circu1ar array.

Key words: smart antenna, antenna array, radiation pattern, signa1-to-noise

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