涡旋电磁波的生成方案与辐射特性研究

摘要：近些年来，随着用于信息交换的无线通信技术的快速发展，移动互联网业务显示出迅猛增长的态势，而作为信息传输载体的电磁频谱已变得十分拥挤，我们需要使用新的方法来提升信道容量以及频谱利用效率。而携带不同模式轨道角动量的涡旋电磁波迅速成为人们关注的热门对象，使用频率相同但扭曲度不同的电磁波，将会明显地提升移动电话、数字电视等通信技术的可用带宽，这也许是现代无线通信领域的一个重大变革。

本文首先介绍电磁轨道角动量的基本原理，简练叙述其发展历史背景与现状，并对已知的一些涡旋电磁波生成方案进行总结。然后对偶极子天线阵列和微带天线阵列进行详细研究，学习了阵列结构和电磁波辐射原理后，利用仿真软件模拟出天线阵列产生的涡旋电磁波在不同模式、频率、口径、传播距离下的辐射场幅度与相位分布，总结出了涡旋电磁波的辐射特性变化规律。

关键词无线通信轨道角动量涡旋电磁波辐射特性

毕业设计说明书外文摘要

Title Study on the Generation Scheme and Radiation Characteristics of Electromagnetic Vortex

Abstract：In recent years, with the rapid development of wireless communication technology for information exchange, the mobile Internet business has shown a rapid growth trend, and as the information transmission carrier electromagnetic spectrum has become very crowded, which requires us to develop new technology to enhance channel capacity and spectrum utilization. And the use of different modes of orbital angular momentum of the electromagnetic vortex quickly become popular objects, using electromagnetic waves with the same frequency but different distortions will significantly enhance the available bandwidth of mobile phone, digital TV and other communication technology, which may be a major change in the field of modern wireless communications.

This paper first introduces the basic principle of the orbital angular momentum of the electromagnetic vortex, briefly describes its historical background and current situation, and summarizes some known generation schemes of electromagnetic vortex. Then, the dipole antenna array and the microstrip antenna array were studied in detail. After studying the array structure and the principle of electromagnetic radiation, the simulation software was used to simulate the radiation of electromagnetic vortex, and we summed up the chang rule of electromagnetic radiation characteristics.

Keywords wireless communication orbital angular momentum electromagnetic vortex radiation characteristics

1 绪论1

1.1 研究背景与意义1

1.2 历史发展与研究现状1

1.3 本文主要研究内容2

2 轨道角动量基本原理4

2.1 轨道角动量基础理论4

2.2 携带轨道角动量的涡旋电磁波产生方式5

3 偶极子阵列天线仿真分析12

3.1 偶极子天线基本结构和设计原理12

3.2 偶极子阵列天线仿真设计14

3.3 仿真结果14

4 微带阵列天线仿真分析17

4.1 微带天线基本结构和设计原理17

4.2 微带阵列天线仿真设计19

4.3 仿真结果19

5 涡旋电磁波辐射特性研究21

5.1 不同模式的涡旋电波辐射特性比较21

5.2 传输距离对辐射特性的影响23

5.3 阵列半径对辐射特性的影响25 涡旋电磁波的生成方案与辐射特性研究:http://www.chuibin.com/tongxin/lunwen_205639.html