文档介绍：南京邮电大学
硕士学位论文
双频圆极化微带天线的研究与设计
姓名:温丹亭
申请学位级别:硕士
专业:电磁场与微波技术
指导教师:张旭翔
2011-03
摘要
随着通信系统的发展,微带天线在现代通信系统中发挥着越来越重要的作用。微带天线
作为通信系统重要部件,其性能的好坏直接影响真整个通信系统。为了使现代通信系统能够
工作在多个频段,双频和多频段的天线已经成为天线设计者的重要的研究课题。如何设计小
型化,高增益的双频圆极化天线,如何改善圆极化天线的轴比带宽,这些都是具有相当难度
的技术。论文的最终目的是研究一款双层结构的双频圆极化天线,采用传统的切角法,给出
最终的仿真结果和分析。全文的主要内容如下:
(a)对基于 H 型缝隙耦合馈电的线极化天线的进行了设计研究,分析了 H 型缝隙天线的各
个参量对天线的性能的影响;介绍了有关圆极化微带天线的基本理论,结合天线圆极化的相
关理论,设计出了基于 H 型缝隙耦合馈电的圆极化微带天线。该天线采用了使辐射单元接地
的办法,抑制了表面波,提高了天线的增益,采用切角法实现天线的圆极化。
(b) 对双频圆极化微带天线进行了研究设计,首先介绍了双频段天线的实现方法,研究
了基于同轴馈电的双频圆极化天线,利用方环形辐射单元,使用同轴探针对其进行馈电,设
计给出了相应的仿真结果,仿真结果表明工作在和的双频圆极化天线具有
较高的增益、良好的双频特性和圆极化特性。

关键字:微带天线,双频,圆极化,H 型缝隙

I
Abstract
Wtih the development of munication system, microstrip antenna is playing an
increasingly important role in munication system. As the ponents in
communication system, its performance will have a direct impact on true munication
system. In order to make the munication system can work in multiple frequency band,
dual-frequency and multiple frequency band antenna has e the important antenna designer
research topic. How to design miniaturization, high gain dual-band circularly polarized antenna,
how to improve the circularly polarized antenna AR bandwidth, are fairly difficult technology. The
ultimate goal of the paper is to study a two-layer dual-band circularly polarized antenna, adopt the
traditional corner cut method, give the final simulation results and analysis. The main contents and
contribution of the paper as follows:
(a)The paper designed and researched the based on the line polarized antenna H aperture
coupling feeder, analyzed the influence to the antenna performance by the each parameter of H
aperture; Introduced circular polarization microstrip antenna, and designed the two-layer circular
polarization microstrip antennas based on H aperture coupling bining the related theory
of circularly polarized antenna. The