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摘要现在正处于信息社会中，信息传输得到了很大的发展和广泛的应用，802.11协议组是IEEE为无线局域网络制定的标准，而后又制定了802.11a和802.11b两个协议，802.11b的载波频率是2.4GHz,802.11a的载波频率是5.2GHz,在实际生产中，5GHz的应用器件研制起来比较麻烦，因此没有受到广泛的使用，使得802.11a的使用范围受到限制，802.11a设备厂商为了应对这样的市场匮乏，对技术进行了相应的改进，自此，双频天线技术也就变得更加的重要。微带天线实现双频或多频有多种方法。一种是双频带微带贴片天线，另一种是印刷单极子天线。本论文首先介绍有关天线的基本背景以及一般原理而后又介绍了缝隙天线的相关理论，后面具体阐述如何制作双频微带天线的方法，并给出仿真的结果，得到一些基本的数据。满足了论文2.4GGHz和5.2GGHz的需要。19350
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关键词 微带天线，双频，HFSS
毕业论文设计说明书（论文）外文摘要
Title The Analysis And Design Of Dual-band Micro-strip Antennas
Abstract
Now in the information society, information transmission has been greatly developed and widely applied, the 802.11 protocol group is IEEE for wireless local area network standards, and then established the 802.11a and 802.11b two protocols, the carrier frequency of 802.11b is 2.4Ghz, the frequency rate of 802.11a is 5.2GHz, in the actual production, application device 5Ghz development up more trouble, therefore has not been widely used, the range of use of 802.11a is limited, 802.11a equipment manufacturers in order to cope with such market lack of technology, gives the corresponding improvement, at the same time, dual-frequency microstrip antenna technology becomes more and more important. There are many ways for microstrip antennas to implement double or multiple frequencies. One is the dual-frequency micro strip patch antenna; another is the printed monopole antenna. This paper firstly introduced the basic background of related antennas and general principles of these antennas and then introduced the related theory of slot antenna, after that specifically described the method about how to make a dual-frequency micro strip antenna, finally gave out the simulated results, and got some basic data. It meets the requirement of paper about 2.4 GHz and 5.2 GHz.
Keywords micro-strip antenna,dual-band，HFSS
目 次
1.引言 1
1.1微带天线的背景 2
1.2天线的分类及特点 2
1.3天线的应用及发展 3
1.4微带天线的小型化技术 4
1.5微带天线的宽频技术 4
1.6微带天线的圆极化技术 5
1.7本篇论文的内容安排 5
1.8实验要求 6
2. 微带天线的基本理论 7
2.1天线的基本电参数 7
2.2微带天线的辐射机理 9
2.3微带天线的理论分析方法 11
2.4微带天线的馈电方式 13
3.双频微带天线的设计 16
3.1无线局域网介绍 16
3.2天线的双、多频技术 17
3.3缝隙天线的研究 18
3.4双频微带天线的设计 21
3.5天线的性能 30
结论与展望 31
致谢 32