摘要本文研究的是微带天线的设计，讨论了矩形微带天线工作原理、结构及其应用。Ansoft HFSS13的使用是本设计研究的重点，它适用于射频/无线通信天线及其他任意形状三维电磁场仿真。HFSS是业界公认的三维电磁场标准仿真软件包，它提供了简洁直观的用户设计界面、精确自适应的场求解器，拥有空前电性能分析能力的功能强人后处理器，能计算任意形状三维无源结构的S参数和全波电磁场。64585

  本文给出了设计矩形微带线贴片的设计公式，然后，详细描述了设计中心频率为2.4GHz矩形微带天线的整个的流程：第一步根据设计公式计算出初步的微带天线的物理尺寸，由于计算天线的物理尺寸使用的计算公式都是经验公式，与实际中有所误差，所以它的物理尺寸需要调整，这种工作在电磁场仿真软件HFSS中来完成，第二步在HFSS中根据2.4GHz微带天线的初步物理参数和天线的具体形状，建立天线模型，来模仿实际中的天线，最后对天线辐射特性进行仿真，并通过不断调整天线模型的各个参数，来使天线的辐射特性能够符合设计要求，从而得到天线的最佳物理参数。

  仿真结果表明，这款设计出来的微带天线有较好的辐射特性和阻抗特性，符合要求。

毕业论文关键词： 微带天线； HFSS软件；仿真

毕业设计说明书（论文）外文摘要

Abstract

The basic operation principle，structural characteristics and application of the rectangular microstrip antenna are discussed. The emphasis of study is how to use the software of Ansoft HFSS12 and 3D (three-dimensional) electromagnetic simulator which is used in RF/wireless communication antennas, packages and photoelectron designs. HFSS is a well-known standard 3D electromagnetic simulator. It provides a simple designing interface and an accurate sell-adapted field solver, which also has a powerful backup processor for unique electricity analysis. It can compute the S-parameters and full-wave electromagnetic of various structures.

At this thesis, the design formulas of rectangular microstrip patch antenna are involved.

According to the design formula, the initial parameters of 2.4GHz rectangular microstrip patch antenna are calculated. But there are a little difference between the initial parameters and the real antenna parameters so that the initial parameters should be rectified. The antenna's model is set up in HFSS which is electromagnetic simulation software. The antenna's radiating character is simulated by HFSS, so we can adjust the antenna's parameters until its radiating character fits in with the designing demands. The antenna's optimization parameters are gained in this way.

The simulation result indicates that the microstrip antennas deigns have good radiation characteristics and impedance characteristics。

Keywords  Microstrip antenna，HFSS software，Simulation

目录

1  绪论 1

1．1  论文的研究背景及意义 2

1．2 微带天线的发展和研究现状 3

1．3 论文的主要内容 3

2  天线的分类及特性参数 4

2．1  天线的分类 4

2．2  天线的主要特性参数 5

2.2.1 方向图 5

2.2.2 方向系数 5

2.2.3 天线的效率 5

2.2.4 天线的增益及增益系数 5

2.2.5 天线的阻抗特性