摘要：目前，GPS已成为日常生活中不可缺少的导航系统。天线作为GPS中的主要组件，天线的研究与发展是决定GPS能否在向前发展重要指标。GPS单馈圆极化微带天线作为天线家族的一员，它以其小型化，易安装等优点被人们广泛应用于移动通信与军事通信等领域。因此单馈圆极化微带天线被众多学者所青睐，在如今快速发展的社会中必将是研究的热点。

本文首先介绍了微带天线的发展历程和国内外研究现状，再介绍了单馈圆极化微带天线的理论技术，利用所学知识对课题所要求的天线进行参数设置与建模。另一方面介绍了Ansoft公司的HFSS软件和对软件功能进行了解，通过HFSS软件去实现一个符合课题要求的覆盖L1频段（1.575GHz）的GPS单馈圆极化微带天线的设计。最后对设计出来的天线进行仿真分析与优化扫描，尽量达到尺寸与功能的最佳状态。

关键词：圆极化；微带天线；HFSS

Abstract：At present, GPS has become an indispensable navigation system in daily life. Antenna as the main component of GPS, antenna research and development is to determine whether the development of GPS can be an important indicator. GPS single-feedback circularly polarized microstrip antenna as a member of the antenna family. It is widely used in mobile communications and military communications in the fields of miniaturization and ease of installation. Therefore, a single-feed circular polarization microstrip antenna is favored by many scholars, the rapid development of society today is bound to be a hot research.

This paper introduces the development history and current situation of domestic and foreign research microstrip antenna, and then introduced a single-feed circular polarization microstrip antenna theory and technology, Using the knowledge of the required parameters of the antenna parameters set and modeling. On the other hand, we introduce Ansoft's HFSS software and understand the software features, Through the HFSS software to achieve a meet the requirements of the coverage of the L1 band (1.575GHz) GPS single-feedback circular polarization microstrip antenna design. Finally, the design of the antenna for simulation analysis and optimization of scanning, as far as possible to achieve the best size and function.

Keywords: Circular polarization; Microstrip antenna; HFSS

目录

第一章 绪论 1

1.1微带天线的简介 1

1.2微带天线的发展与研究现状 1

1.3微带天线的研究分析方法与技术介绍 2

1.4论文的内容及安排 3

第二章单馈圆极化微带天线的理论分析 4

2.1单馈圆极化微带天线概述 4

2.2单馈圆极化微带天线基础理论 5

2.3微带天线的主要考察参数 6

2.3.1天线效率 7

2.3.2增益系数 7

2.3.3驻波比 8

2.3.4输入阻抗 8

2.3.5S参数 8

2.3.6频带宽度 9

2.3.7方向性系数 9

第三章仿真软件HFSS简介 10

3.1HFSS软件的功能 10

3.2HFSS软件的设计环境 11

3.3HFSS软件仿真的具体操作