摘要作为宽带天线的一种，平面螺旋天线是近几年发展并得到普遍应用的一种超宽带天 线。由于它具有频带宽，圆极化性能好，体积小这些优点，平面螺旋天线已经被广泛应 用于军用国防领域和民用移动通信领域。目前平面螺旋天线的发展趋势是超宽带、体积 小和功耗低。本文对此类天线如何实现小型化以及设计方法展开了讨论研究。 

    主要的研究成果进行了以下几点的归纳： 78051

  （1）文中首先介绍几种小型化的几种方法，如等角螺旋+阿基米德螺旋，以此达到天 线的优化。 

  （2）设计了一个等角螺旋天线始端终端阿基米德化的复合结构螺旋天线。并利用 HFSS 软件进行设计仿真得出理论数据，为了实现天线口径的小型化，对平面等角螺旋天线与 平面阿基米德螺旋天线的电特性进行对比分析，得出结论。 

  （3）根据天线的宽频带特性的特点，设计了用于该天线平衡馈电的超宽带平衡-不平 衡变换器（简称为巴仑）。仿真结果表明加宽带巴伦后的平面螺旋天线可以工作 2 到 12GHz 频段内，且其各项指标均已满足预期要求。 

毕业论文关键词  HFSS； 超宽带； 平面螺旋天线； 巴伦 

毕 业 设 计 说 明 书 外 文 摘 要

Title Miniaturization of ultra wideband spiral antenna simulation design

Abstract

As a kind of broadband antenna, planar spiral antenna is development in recent years and widely application of a uwb antenna。Because it has a wide frequency band, good circular polarization performance, small size of these advantages, planar spiral antenna has been widely applied in military defence and civil mobile communication field。The current development trend of the planar spiral antenna is ultra wideband, small volume and low power consumption。In this paper, this kind of antenna design method discussed how to realize miniaturization and research。The main research results for the following:(1) this paper first introduces several kinds of miniaturization of several methods, such as the equiangular spiral + Archimedes spiral, and put forward a "loading double copper ring + jumper resistor" way of compound improved, in order to optimize the antenna。(2) the design of a signalling equiangular spiral antenna terminal compound structure of Archimedes spiral antenna。Data and using HFSS software design simulation theory, in order to realize the miniaturization of antenna aperture, the planar equiangular spiral antenna with planar archimedean spiral antenna electrical characteristics were analyzed, the conclusion。(3) according to the characteristics of the wide-band characteristics of antenna, the antenna has been designed to balance feed ultra-wideband balance - imbalance converter (hereinafter referred to as to hebron)。The simulation results show that after widened with barron planar spiral antenna can work anywhere from 2 to 10 GHZ frequency band, and all the indexes have meet the expected requirement。 

Keywords  HFSS ;     Ultra-wideband;  Planar spiral antenna; Barron

本科毕业设计说明书 第 I 页

目 次

1 引言 1 

 1。1    课题研究背景与意义 。 1 

 1。2    国内外研究现状 。 1 

 1。3    螺旋天线的种类介绍 。 2 

 1。4  天线的小型化  4 

 1。5  本文的章节安排  4 

2    平面螺旋天线的理论以及分析 。 5 

 2。1  非频变天线的理论分析  5