圆环阵列天线结构研究【参考】.docxVIP

班 班级 021114学学号科毕业设计论文题 目圆环阵列天线结构研究学 院电子工程学院专 业 电磁场与无线技术学生姓名 导师姓名摘要在移动通信技术被广泛应用的今天，阵列的处理技术也得到了极大的发展，以此形成了智能天线的研究领域。在移动通信技术发展中，以自适应阵列天线为代表的智能天线已成为最活跃的研究领域之一。自适应阵列天线中最常见的两种阵列分别是线性阵列和圆形阵列，其中线阵只能有180的扫描范围，而圆形阵列却可以提供360的方位角，通过循环移动阵列激励，阵列能简单且灵活的操纵波束方位，从而获得理想的空间定向波束，使天线主波束对准用户信号到达的方向，旁瓣和零陷对准干扰信号到达的方向，达到充分高效的利用用户信号和删除或抑制干扰信号。本文主要分析了圆环阵列的性能，在此基础上对几种圆环阵列的阵型进行仿真和分析，探究了几个圆环阵的参数对整个圆环阵天线性能的影响。关键字：阵列天线 对称振子 方向图 圆环阵列ABSTRACTToday, mobile communication technology is widely used, and the technology of array processing has been greatly developed, forming the research area of smart antenna.In the process of the development of mobile communication technology, the smart antenna which is represented by the adaptive array antenna has become one of the most active research areas.The two most common array adaptive array antenna are linear array and circular array, the linear array can only have a scanning range of 180 degrees, while the circular array can provide 360 degree azimuth angle, By circulated moving array incentives, the beam azimuth of array can be simple and easily controlled,in order to obtain the ideal space directional beam , and to make the main beam of the antenna point at the direction of the user signal arrival ,and to let the side lobe and zero notch alignment interference signal arrival, to achieve full and efficient using of user signal and removing or suppressing interference signals. This paper mainly analyzes the performance of the circular array, on that basis,we simulate and analyze several kinds of ring arrays, and explore several important parameters that have an effect on performance of the loop array antennas.Keywords: array antenna dipole pattern the ring array目录第一章 绪论11.1研究背景11.2国内外研究现状11.3 使用软件介绍21.4 本文主要内容及文章结构安排41.5 本章小结4第二章 阵列天线基本原理52.1电磁波的干涉与叠加原理52.2方向图乘积定理52.3本章小结7第三章 直线阵列和圆形阵列93.1直线阵93.1.1 均匀N元直线93.1.2 均匀N元直线阵的方向性系数133.2圆环阵列143.2.1方向函数153.2.2方向性系数163.3最优权向量准则173.3.1 最小均方误差(MMSE)准则173.3.2 最大信噪比(MSNR)准则183.4直线阵与圆阵的性能比较193.5本章小结