有哪些信誉好的足球投注网站- 1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
- 2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击 这里二次下载。
- 3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
- 4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
- 5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
- 6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
- 7、VIP文档为合作方或网友上传，每下载1次， 网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档
查看更多
微带天线研究
摘要
通信系统的发展带来了天线行业的勃勃生机，在众多的天线类型中微带天线已成为当前研究的前沿之一，很具有研究前景与实用意义。特别是微带缝隙天线，以其重量轻、剖面薄、平面结构且易与载体共形，馈电网络可与天线结构一起制成等优点已经引起天线工作者的广泛关注。本文简要介绍了微带天线和微带缝隙天线的分类、分析方法、主要参数，然后提出了一种三角形缝隙微带天线。在介质基板的一面一个三角形缝隙，另一面采用一个等腰三角形微带线进行馈电。通过仿真给出了天线的s参数，VSWR和方向图。
关键词：天线参数，微带天线，微带缝隙天线，三角形缝隙微带天线设计
目录
一、绪论···································································· 3
1.1 简介······································································3
1.2 微带天线的发展····························································3
1.3 微带天线的特点···························································3
二、微带天线基本知识·························································4
2.1 微带天线的辐射机理························································4
2.2微带天线的分析方法························································4
2.3微带天线的主要电参数··························· ··························5
2.3.1 输入导纳·····························································5 2.3.2 辐射电阻和品质因数··················································5 2.3.3 带宽································································6 2.3.4 方向性系数、增益和天线效率··········································6
2.3.5 方向图······························································7
2.4 激励方法································································7
2.4.1 微带馈电····························································7 2.4.2 同轴线馈电··························································8
三、微带缝隙天线····························································8
3.1 矩形缝隙天线···························································9
3.1.1 输入阻抗··························································9 3.1.2 方向图····························································11
3.2 环形缝隙天线····························································11
3.3 锥形缝隙天线天线························································12
四、三角缝隙宽缝微带天线······················································13
4.1 天线设计与性能····················
文档评论（0）