移动通信中天线阵列特性 毕业论文.docVIP

移动通信中天线阵列特性 分析软件的编制 内 容 摘 要 天线通信系统的重要。。以天线的方向函数为主要研究对象分析天线的方向性MATLAB语言编制了一个天线阵列特性分析软件，实现了天线特性参数的计算和灵活绘制天线方向性图的功能。该软件涵盖了多种不同类型的天线，根据选定的天线类型，通过输入相应的参数，点击绘制图形功能，便可以绘制出天线阵的立体方向性图。该软件还具有计算功能，利用该软件可以计算天线的主瓣张角、主瓣宽度和方向性系数等一系列参数。通过构造任意的方向性函数，该软件还实现了自定义方向性函数的功能，利用该软件可以绘制出输入的规定范围内的此方向性函数的极坐标方向性图，同时还可以返回此图中最大值所在的位置，为空间方向角的间隔选取提供参考，并能保存此方向图的图片。该软件具有较强的方向性图绘制功能和天线特性参数的计算功能，在教学和工程实际中都具有一定的实用价值。 关键词天线，方向性，方向图，MATLAB ABSTRACT Mobile communications antenna array is an important part of the system, its performance is directly connected to the system of communication quality. With 3G technology development and maturing of public signal of wireless network coverage expansion, the antenna array is a widely used. Antenna array a wide range of different properties. Describe the characteristics of antenna array parameters are many, and complex calculations, particularly describing the characteristics of antenna array orientation picture shows the direction of three-dimensional maps, very difficult. To address these issues, this article antennas function as the main object of the direction of the antenna characteristics. On this basis, developed using MATLAB language features an array of software, to achieve the calculation of the antenna parameters and flexible mapping function of the antenna directional diagram. The software covers many different types of antennas, according to the selected antenna type, by entering the corresponding of the parameters, click on drawing graphics, we can draw out the three-dimensional pattern of the antenna array. The software also has a calculation function, using the software can calculate the inclination of the antenna main lobe, main lobe width and directivity and a series of parameters. Function by constructing an arbitrary direction, the software also implements a custom function directional function, using the software can draw within the provisions of the input function of this directional orientation polar map, and also can return to this map the