Vivaldi基于CST的超宽带微带天线设计
超宽带技术是当今最具竞争力和发展前景的技术之一。其具有许多窄带系统无法比拟的优点，例如：高数据速率、低系统成本和抗多径效应,抗干扰性强、频谱覆盖范围广、距离分辨率高、对现有系统干扰小等。
由于无线电的应用频段被不断地扩展，进而促进了超宽带电磁学的产生。在超宽带频段内，时域特性的研究表明，时域电磁波是人类非常重要的资源，作为超宽带无线电系统中不可缺少的一员，超宽带天线的研究也因此变得相当有意义。
本论文主要研究了关于超宽带微带天线的设计。首先介绍了天线及微带天线的基本理论，然后重点研究了超宽带天线，Vivaldi天线，详细分析设计了Vivaldi天线的传统模型，以及改进模型，并利用CST STUDIO SUITE 2010软件仿真，分析了Vivaldi天线可以使用的工作频率范围、性能以及尺寸等。5558
关键词 天线，超宽带，CST，Vivaldi天线
毕业设计说明书外文摘要
Title The CST-based Ultra-Wideband Microstrip Antenna Design
Abstract
Antenna, in the composed of any radio system, are essential components. With the development of radio communication technology, the antenna has been widely applied in various fields.
The ultra-wideband technology is one of the most competitive and promising technologies. It has many incomparable advantages of narrowband systems, such as: high data rate, low system cost and the effect of anti-multipath, strong interference, a wide range of the spectrum covering , high resolution, small interference to existing systems.
Because the application frequency of the radio is constantly expanding, the generation of ultra-wideband electromagnetic is promoted. Within the ultra-wideband frequency band ,the study of time-domain characteristics shows that, time-domain electromagnetic wave is very important human resource, as an indispensable ultra-wideband radio systems, the study of ultra-wideband antenna becomes very meaningful.
This paper studies the design of ultra-wideband microstrip antenna. First it introduced the basic theory of antennas and microstrip antenna; and then focus on the ultra- -wideband antennas, the Vivaldi antenna, and detailed analysis of the traditional model of the Vivaldi antenna, and the improved model; with the help of CST STUDIO SUITE 2010 software, analysis the operating frequency range, performance and size of the Vivaldi antenna.
Keywords antenna, ultra-wideband, CST, the Vivaldi antenna
目次
1.绪论 1
1.1选题背景及研究意义 1
1.2天线及微带天线简介 2
1.2.1天线的概念及特点 2
1.2.2微带天线的概念及特点 2
1.3本论文的主要工作和安排 3
2.超宽带天线 4
2.1超宽带信号介绍 4
2.2超宽带天线简介 4
2.2.1 超宽带天线概述 4
2.2.2 超宽带天线特点 5
3.CST软件 7
3.1 CST工作室套装介绍 7
3.2 CST软件简介 7
3.2 CST软件使用 8
4.超宽带天线设计 10
4.1超宽带天线的类型选择 10
4.1.1 超宽带天线的设计指标 10
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