摘要随着近年来通信系统的发展，对天线的性能和体积要求越来越高。天线研究者对体积 小并可集成化高的微带天线的关注越来越多。现代无线通信的发展趋势和要求正好趋向这 类型的天线，而微带缝隙天线则兼具这些特性。因此，对微带缝隙天线的研究具有积极意 义。本文主要围绕微带缝隙天线进行分析和研究。75320

本文先从天线的电性能参数、馈电结构等方面对天线的基本性能做了介绍。随后从理 论上对渐变缝隙天线进行了简单的计算分析。最后根据设计指标要求，设计了两种工作在 Ka 波段的渐变缝隙天线，一种是直线渐变缝隙天线，一种是指数渐变缝隙天线，并利用电 磁仿真软件 HFSS 对所设计的天线几何结构进行了优化，计算了天线的驻波比、方向图等 重要的电性能参数。仿真结果表明所设计的两个天线均符合设计要求。

毕业论文关键词 天线 渐变缝隙天线 方向图 HFSS

毕 业 设 计 说 明 书 外 文 摘 要

Title Electromagnetic Simulation of Tapered Slot Antennas  on Dielectric Substrate

Abstract In recent years, with the development of communication systems, the demanding for the performance and volume of antenna is very high。 The microstrip antennas, which can be integrated and their volume are small, have been received widely attentions by the antenna researchers。 The tapered slot antenna is one kind of this antenna, which exactly meets the development trend and requirements of modern wireless communication system development, therefore the researches for tapered slot antenna have the positive significance。 This paper mainly focuses on the tapered slot antenna analysis and researches。

Firstly, the antenna's property parameters and radiation pattern are given。 Then Slot antenna's elementary theories and analysis methods are elaborated。 Finally, according to the requirement of the design, two tapered slot antenna is designed, one is the linear tapered slot antenna (LTSA), and another is the Vivaldi antenna。 By using electromagnetic simulation software HFSS, its structure is optimized and VSWR and radiation pattern are computed。 The results show that these antennas meet the requirement of design。

Keywords antenna tapered slot antenna radition patterns HFSS

本科毕业设计说明书 第 I  页

目 次

1 绪论 1

1。1 微带天线概述 1

1。2 渐变缝隙天线的发展与现状 2

1。3 本文的主要工作 2

2 天线基本理论 3

2。1 天线电性能参数 3

2。3 微带天线和渐变缝隙天线的分类 8

2。4 微带天线的馈电方式 8

3 渐变缝隙天线的电磁仿真 9

3。1 TSA 的理论分析 9

3。2 TSA 的工程分析 12

3。3。直线渐变缝隙天线的 HFSS 建模仿真 13

3。4 指数渐变缝隙天线的 HFSS 建模仿真