透明天线设计

透明天线设计(论文12000字)
摘要：随着无线通信技术的高速发展，对天线性能的要求越来越高，同时天线的设计难度也日益增加。透明天线因为小型化、透光性和抗形变特性能更好的应用于很多场合，因此得到了广泛的研究。本文主要研究的是利用网格状金属结构贴片来提高天线效率同时实现透明化、小型化的方法。
本文首先概述了贴片天线的研究现状，还有其辐射机理、基本结构、馈电形式等。然后详细描述了蝶形透明天线的设计过程，首先是传统蝶形天线的设计方案，其次对合适的蝶形结构进行透明化改进，并且分别在HFSS中仿真优化，分析其S11图、方向图以及增益图，并分析每种方案的优缺点。
关键词：网格状金属结构  透明天线 蝶形天线  小型化 
Design of Transparent Antenna
Abstract:With the rapid development of wireless communication technology, the demand for antenna performance is getting higher and higher, while the design of antenna is also becoming increasing difficult. Transparentantenna can better application in many occasions because of its miniaturization, light penetration and resistance to deformation characteristics. It's been studied extensively. This essay mainly studies the method of replacing the transparent film with a grid metal structural patch to improve the efficiency of antenna and achieve the transparency and miniaturization of it.
This paper firstly summarizes the research status of the patch antenna, as well as its radiation mechanism, basic structure, feed form and so on. Then, the design process of the bow-tie transparent antenna is described in detail. Firstly, the design scheme of the traditional bow-tie antenna is improved. Secondly, the transparent structure of the bow-tie structure is improved, and the simulation is optimized in HFSS. Analyze the S11 diagram, the directional pattern and the gain graph, and analyze the advantages and disadvantages of each scheme.
Key words:Grid metal structural  Transparent antenna  Bow-tie antenna  Miniaturization 
 

目录
1绪论    5
1.1研究的背景及意义    5
1.2国内外研究现状    5
1.3本课题研究内容    7
2基本理论    8
2.1 贴片天线    8
2.2 贴片天线的馈电方式    8
2.3 贴片天线的辐射机理    8
2.4 贴片天线的基本性能参数    9
2.4.1 方向图/方向性系数    9
2.4.2 天线效率    9
2.4.3 增益    10
2.4.4 输入阻抗及其相关特性    10
2.4.5 频带宽度    10
2.5 传统微带贴片天线模型    11
2.6 本章小结    12
3蝶形天线设计    13
3.1 Ansoft HFSS仿真软件的介绍    13
3.2传统蝶形天线    13
3.2.1 天线的基本结构    13
3.2.2 仿真结果及讨论    14
3.3天线参数的影响    16
3.3.1天线边长的影响    16
3.3.2顶角大小的影响    18
3.4 本章小结    20
4透明天线设计    21
4.1 传统透明天线    21
4.2网状结构透明化    21
4.3传统贴片天线网状透明化    24
4.3.1天线的基本结构    24
4.3.2仿真结果及讨论    25
4.4蝶形天线透明化    26
4.4.1天线的基本结构    26
4.4.2仿真结果及讨论    26
4.5 本章小结    28
5工作总结    29
参考文献    30
致谢    32