室内全向吸顶天线设计

南京工程学院

毕业设计说明书(论文)

作者：* * *学号：* * *

系部：康尼学院

专业：通信工程

题目：室内全向吸顶天线设计

指导者： * * * 教授

评阅者： * * * 讲师

2013 年 6月南京

A Design of an Indoor Omni-directional

Ceiling Antenna

A Dissertation Submitted to

Nanjing Institute of Technology

For the Academic Degree of Bachelor of Science

By

Aiya Day

Supervised by

Prof. Qi Wang

College of Communication Engineering

Nanjing Institute of Technology

June 2013

摘要

本毕业设计在对天线基本理论、主要参数、工程应用进行详细阐述的基础上，采用基于有限元法的数值仿真技术HFSS，设计了一种全向辐射的吸顶天线。天线能够在双频带806~960和1710~2500MHZ有效地工作，回波损耗小于-10dB，增益达到5dB。根据仿真优化数据制作了一个室内全向吸顶天线的实验模型，利用网络矢量分析仪、路由器、笔记本以及wireless Mon等软、硬件对天线进行测量，包括回波损耗、辐射方向性和增益等，与仿真结果比较具有很好的一致性。本文还对不同几何参数的吸顶天线物理性能的影响进行多方面的研究。最终所设计的天线具有较好的工程应用性。

关键词：室内全向吸顶天线；Ansoft HFSS；回波损耗；增益方向图

Abstract

Based on the antenna's fundamental theory and the main parameters, engineering application, this paper designed a ceiling antenna with omnidirectional radiation, which is based on the FEM numerical simulation technology of HFSS. The antenna can work in the double frequency band between 806~960 and 1710~2500MHz effectively. The antenna's return loss is less than -10db and the gain can reach 5dB. According to the simulation optimization data, I construct an experiment model of Omni-directional radiation ceiling antenna. By using software Wireless Mon and hardwares such as vector network analyzer, routers, laptop computer, the antenna's return loss, radiation pattern and gain are measured. It is shown that the measured data has a good consistency with the simulation results. This paper also made all-round study to the antenna's physical properties for different geometric parameters'. The final designed antenna has good engineering application.

Key words: Indoor Omni-directional ceiling antenna；Ansoft HFSS. Return loss；Gain pattern

目录

第1章绪论 .................................................. - 1 -

1.1引言................................................... - 1 -

1.2选题背景与意义......................................... - 1 -

1.3国内外现状............................................. - 2 -

1.3.1国内现状 ......................................... - 2 -

1.3.2国外现状 ......................................... - 2 -

1.4毕业设计的主要内容 ................................. - 3 - 第2章天线基本原理 .......................................... - 4 -

2.1天线概述............................................... - 4 -

2.2天线的基本概念......................................... - 4 -

2.2.1电基本振子的辐射 ................................. - 4 -

2.2.2发射天线的电参数 ................................. - 5 -

2.3电磁场的有限元法....................................... - 7 -

2.3.1有限元法基本原理 ................................. - 7 -

2.3.2 有限元法求解问题的基本步骤....................... - 8 - 第3章HFSS仿真技术 .......................................... - 9 -

3.1 HFSS软件简介.......................................... - 9 -

3.2 HFSS仿真技术的主要功能................................ - 9 -

3.3 HFSS仿真设计解决思路.................................. - 9 -

3.4 HFSS仿真软件的应用................................... - 10 - 第4章室内全向吸顶天线的研究............................... - 11 -

4.1 天线的设计........................................... - 11 -

4.1.1 天线设计的基本思路.............................. - 11 -

4.1.2天线的设计要求 .................................. - 11 -

4.2 天线仿真模型的构建................................... - 11 -

4.3改变反射台的尺寸对天线各方面性能的影响................ - 29 -

4.4实验模型的制作........................................ - 37 - 第5章天线模型的测量与分析................................. - 38 -