天线毕业论文.doc

无线系统中天线特性分析软件的编制
摘要
随着无线通信技术的迅速发展，天线作为无线系统中的重要组成部分得到了广泛的应用。描述天线特性的参数很多，其中一些参数，如方向性系数、输入阻抗、互阻抗等都需要复杂的计算，在实际应用中很不方便。为了解决这一问题，本文运用MATLAB语言编制了天线复杂参数的计算程序。
首先，复****了天线的有关知识，掌握了辐射阻抗、输入阻抗、方向性系数和增益系数等复杂参数的计算方法和公式。其次，学****了MATLAB的GUI相关知识，掌握了其界面设计的方法，并学****了绘图的方法。在此基础上，设计了天线参数的计算系统，并学会在界面设计好的基础上添加相关代码，实现所需要的功能。最后，在界面完成的基础上，根据原理进行检验，验证系统功能的有效性和正确性。
本文基于MATLAB开发环境，使用MATLAB的GUI界面，设计了复杂天线参数的计算系统，并获得了良好的效果。
关键词：天线 输入阻抗 增益 MATLAB语言
Abstract
With the rapid development of the wireless communication , the antenna has been widely used as an important part in the wireless system .There are many characteristic parameters for describing the characteristic parameters of antenna ,in which some parameters, like the pattern-propagation factor, the input impedance, the mutual impedance and so on ,all need the complex calculation, Therefore , it is quite practically inconvenient .In order to solve this problem, this text establishes the calculation procedure for the complex parameters of antenna by MATLAB language .
First, the related knowledge about the antenna is necessary, and we must know more about the method and the formula for the complex parameters, such as radiation impedance, input impedance, the pattern-propagation factor and the gain factor and so on .Next, we should study the related knowledge about GUI of MATLAB, and grasp the method to design interface and to draw. Thus, we get the interface to calculate the correlated antenna parameters and build the code in it to realize the function required .Finally, above this, carry on the examination according to the principle, for testing the validity and the accuracy of the system function.
With the GUI interface in the environment of MATLAB, we design the system for calculating the complex parameter of the antenna, and gain a beautiful performance.
Keywords: antenna；input impedance； gain factor ; MATLAB language
目录
第1章 绪论 1
课题研究的背景 1
课题研究的意义 1
本次课题的主要工作