文档介绍:摘要 I
摘要
基于流星余迹通信的应用背景,本文展开对水平极化全向高增益天线的研究
和设计。
本文首先阐述全向天线的设计原理。简单介绍天线设计中所需考虑的主要指
标,并进一步对基于几种不同设计原理的全向天线(包括缝隙天线、旋转场天线、
电流环天线和多面组合天线)进行分析,研究各种全向天线的辐射机理和方向图
特性。
接着介绍几种主要类型水平极化全向天线的工作原理,在课题研究所要求的
工作频段内设计并且仿真上述几种类型的天线。然后全面地分析并对比几种水平
极化全向天线的各项性能指标,结合论文中通讯系统所提出的技术指标,选择蝙
蝠翼天线和组合圆环天线作为基本方案来进行更深入的研究。
基于前面的研究结论,本文接着对蝙蝠翼天线和组合圆环天线展开详细的设
计与分析。由两个正交放置、相差 90°的蝙蝠翼天线组成旋转场天线和由四个对
称振子组成的组合圆环天线都可以实现水平全向辐射,同时,用多个单元组成均
匀直线阵,以达到 10dB 的增益要求。用仿真软件对所设计的天线展开全面的仿真
设计与分析,通过仿真优化,使得天线达到所要求的技术指标。通过仿真计算,
研究天线中的影响输入阻抗和水平面方向图不圆度的几个关键参数。最后讨论地
面对于水平极化天线方向图的影响。
本文的设计和研究对水平极化全向天线的工程设计和应用具有重要的参考意
义。
关键词:流星余迹通信水平极化全向天线蝙蝠翼天线圆环天线
Abstract III
Abstract
The design of the horizontal polarized omni-directional antennas with high gain
has been researched in this paper to meet the application requirements in the Meteor
munication (MBC) systems.
Firstly, the principles about the omni-directional antennas design are introduced in
this paper. After the main characteristic parameters involved in the antenna design are
presented, several kinds of omni-directional antennas based on different design
principles, including slot antenna, turnstile antenna, small loop antenna and multi-sides
combined antenna, are separately analyzed. Furthermore, the omni-directional radiation
principle is studied, and the characteristics of the radiation patterns are discussed.
Following are some theories about several typical horizontal polarized
omni-directional antennas, and then are some designs and simulations of these antennas
in the specified frequency band. And then, according to the requirements of the
communication system, super turnstile antenna bined loop antenna are chosen
to study further paring the performance of these several horizontal polarized
omni-directional antennas in detail.
Based on the research above, the super turnstile antenna and bined loop
antenna are fully studied. The super turnstile posed by two perpendiculaly
located batwing antennas