基于C型槽天线的研究设计7607430.docxVIP

毕业设计（论文）题目：基于C型槽天线的研究摘要微带天线由于重量轻、制作简单、成本低等诸多优点,特别适合应用于各种移动地面设备,以及飞行载体电子设备。但微带贴片天线同时具有阻抗带宽窄、增益低的缺点。这些缺点大大限制了它的应用范围。近些年来，随着通讯设备的发展，对天线的性能提出了更高的要求，因此迫切需要对微带天线进行新技术的研究。本文设计出了一种C型槽天线，改变了传统贴片天线阻抗带宽窄的缺点,在较小体积的条件下实现展宽带宽的目的。通过分析研究C型槽线谐振特性，选取合适的馈电方式，利用仿真软件 HFSS对该天线的参数进行了仿真和优化。研究相关几何结构尺寸的改变对C型槽天线电性能的影响，探讨槽天线的基本设计原理及其多频、宽带、小型化的设计技术。根据仿真结果最后设计出了基于2.4GHz和5.8GHz为工作频率的C型槽天线，这两个频率段又分别是WLAN 的工作频率段，所以可以将天线适用于无限局域网。关键词：微带天线槽天线谐振点C型槽AbstractThe microstrip antenna have been widely used because of their good characteristics, such as electrically thin, light weight, low cost and so on. However, the electrical performance of the basic microstrip antenna suffers from a number of serious drawbacks, including narrow band width, high feed network and low gain. As the rapidly developing of markets, suggest that the demand for microstrip antennas will increase even further. In the meantime, it calls for the development of multiband.This paper presents a C-slot antenna. It overcomes the disadvantage of the traditional patch antenna such as impedance bandwidth. So the purpose of exhibiting wide bandwidth can be achieved in small size. By analyzing the resonant characteristics of C-slot antenna and selecting a suitable feeding method. The parameter of the antenna is simulated using HFSS and the size of the antenna is optimized accordingly . In this paper , we study the influence on the performance according to the change of the geometric structure and discuss the principles of the antenna and the design technology of the slot with the performance of multi-frequency, wideband and miniaturization. According to the simulated results ,we design the C-slot antenna based on 2.4GHz and 5.8GHz,which are working frequency band of WLAN, so it can be applied to WLAN net.Key word：Microstrip Antenna slot antenna The antenna resonance C-slot目录摘要1Abstract2第一章绪论51.1微带天线的背景及研究意义51.2微带天线的国内外研究进展51.3微带天线的定义61.4微带天线的应用61.5本文的工作以及章节安排6第二章天线基础理论72.1天线的基本参数72.1.1天线的方向特性参数72.1.2天线的阻抗特性82.1.3天线的效率82.1.4天线的极化特性82.1.5天线