毕业论文设计微带贴片天线的设计及仿真.doc

摘 要 微带天线具有重量轻、低剖面、成本低、易于制造封装和安装等许多固有的优点，近年来，被广泛应用在雷达、导弹测控、电子对抗、武器引信、遥感遥测、卫星通信、移动通信、医用微波等重要领域。 本文介绍了微带天线的辐射机理，阐述了传输线模型理论、腔模理论、积分方程法三类现代微带天线理论分析方法，简单说明了微波仿真软件HFSS的基本原理及使用方法，并以圆形微带贴片天线为例，讲解了微带贴片天线的设计过程。通过建立圆形、圆环形、三角形，正六边形四种典型微带贴片天线模型，利用有限元分析法和HFSS软件对不同贴片形状的微带贴片天线进行了仿真研究，最后得出了正确的仿真结果，这将为我们今后设计高频段天线提供有力依据。 关键词：微带贴片天线；有限元分析法；HFSS Abstract Recent years, for its natural advantages, microstripe antenna has been widely applied to many fields such as radar, missile detect and control, electronic countermeasures, arm fuse, remote sensing and measurement, satellite communication, mobile communication, medical microwaves and so on. Indeed, it has many edges over others. For example, it’s easy to manufacture, encapsulate and install with light weigh, low profile and low cost. This paper provides a brief introduction to radiation mechanisms. By using three modern analysis methods for micro stripe antenna, namely, transaction line model theory, cavity theory, and integral equation method, it also tells the basic principle and usage method of microwave simulation software and HFSS. In the paper, four typical circular micro strip patch antennas respectively in circle, toroidal, triangle, and right hexagon are taken as examples to explain the design process. During the process, finite element analytical method and HFSS are used for simulation study. In this way, it turns out the correct simulation results which will offer a strong argument for future design of high frequency antenna. Keywords:Microstrip patch antenna; Finite-Difference; High Frequency Structure Simulator（HFSS） 目 录 前言 1 1 微带天线基本理论 2 1.1 微带天线的基本电参数 2 1.2 微带天线的结构及工作原理 4 1.2.1 微带天线的结构 4 1.2.2 工作原理 4 1.3 微带天线的分析理论 4 1.3.1 传输线理论 4 1.3.2 腔模理论 4 1.3.3 全波理论 4 1.4 微带天线的数值分析方法 4 1.4.1 矩量法 4 1.4.2 有限元法 4 1.4.3 时域有限差分法 4 1.5 几种不同形状微带贴片天线 4 2 HFSS软件介绍 4 2.1 HFSS软件的优点及发展现状 4 2.2 HFSS软件设计 4 2.2.1 HFSS软件原理及设计步骤 4 2.2.2 HFSS软件的一些使用方法 4 3 微带贴片天线的设计及仿真 4 3.1 微带贴片天线的总体设计方案 4 3.2 四种微带贴片天线的设计参数 4 3.3 微带贴片天线的设计过程 4 3.4