摘要
研究了基于阿基米德螺旋天线的有向阵元构成的两种圆形阵列(8单元圆阵和1+7型圆阵)的性能比较。首先介绍了N元圆形阵列的方向图特性并推导了方向图函数,在此基础上分析了基于有向阵元的阵列方向图特性;接着讨论了阿基米德螺旋天线在不同频率下的方向性,给出了单个阵元的方向图的仿真结果;最后给出了有向阵元构成的两种圆阵的方向图以及MUSIC算法测向的仿真结果,对比分析了两种圆阵的性能,发现1+7型圆阵要优于8单元圆阵。
Performances of the two circular arrays,known as circular array of 8 units and 1＋7 units and based on directional elements of Archimedean antenna,are studied and compared in this article.First,the pattern characteristics of uniformly distributed circular array of N units are described,the special pattern functions derived,and on this basis,the pattern characteristics of array formed with directional elements analyzed.Then,direction of Archimedean spiral antenna under different frequencies is discussed and simulation results of pattern for single element are given.Finally,simulation results of pattern for two circular arrays composed of directional elements as well as the MUSIC algorithm are described,and the performances of two circular arrays are compared.It is found that the 1＋7 units are much better than the 8 units.
出处
《通信技术》
2010年第12期161-163,共3页
Communications Technology
