【作者】 李斌；

【导师】 褚庆昕；

【作者基本信息】 华南理工大学 ， 电子与通信工程（专业学位）， 2020， 硕士

【摘要】 通信无论是在人们日常生活交流,还是在工作交流中都是必须手段。目前全球正在大力推广5G通信技术,我国5G技术已经走在世界发展的前列。天线作为通信的关键技术,其对通信的可靠性和稳定性具有非常大影响。5G通信技术对于天线的要求非常高,为了满足要求,目前通常采用Massive MIMO天线。本文设计了一款小型化的共面波导馈电Y型平面单极子天线,并对该天线进行了仿真分析和测试,主要完成以下工作:(1)通过查找文献资料,对本文所涉及的5G移动通信关键技术和天线与阵列基础理论进行了调研,而且根据设计要求,确定本文所要研究的天线技术方案。(2)根据技术方案,确定了设计天线结构为共面波导Y型平面单极子天线,首先对小型化天线、单极子天线、共面波导馈电等相关原理进行了介绍,随后对该类型天线性能的影响因素进行了全面分析。最后综合所有的分析结果,确定了所需要的单极子天线结构,并对该结构进行仿真分析和测试,验证是否满足设计要求,同时对该设计结构的薄弱环节进行优化改进,使天线性能更优。(3)小型化天线设计的完成只是5G天线系统的一部分,而天线阵列却是实现5G通信的关键,本文首先对耦合原理、常用的解耦合方式进行阐述,根据各种解耦合方式的特点,选择最为适合的解耦合方式。然后分别对未增加解耦合、增加解耦隔离臂、增加解耦中和线三种情况对天线阵列的耦合特性的影响进行了分析研究,对选择的耦合方式进行仿真分析和测试,验证其是否满足设计要求。更多还原

【Abstract】 Communication is a necessary means in people’s daily life connection and work communication.At present,5G communication technology is being vigorously promoted in the world,and the 5G technology in China has been in the forefront of world development.As the key technology of communication,antenna has a great influence on the reliability and stability of communication.5G communication technology has a quite high requirement for the antenna.In order to meet the high requirement,the mass MIMO antenna is usually used at present.In this paper,a miniaturized Y-type planar monopole antenna fed by coplanar waveguide is designed by simulated and tested.This paper mainly completes the following work:(1)Based on the literature,the key technology of 5G mobile communication and the basic theory of antenna and array are investigated,and according to the design requirements,the antenna technology scheme is determined.(2)According to the technical scheme,it is determined that the design of antenna structure is coplanar waveguide Y-type planar monopole antenna.Firstly,the related principles of miniaturization antenna,monopole antenna,coplanar waveguide feeding are introduced,and then the influencing factors of the performance of this type of antenna are comprehensively analyzed.Finally,all the analysis results are integrated to determine the required monopole sub antenna structure,and the simulation analysis and testing of the structure is carried out to verify whether it meets the design requirements.At the same time,the weak link of the design structure is optimized and improved,which is better antenna performance.(3)The completion of miniaturized antenna design is only a part of 5G antenna system,and the antenna array does realize the key of 5G communication.Firstly,this paper describes the coupling principle and common decoupling methods,and selects the most suitable decoupling method according to the characteristics of various decoupling methods.Then,the effects of uncoupling,isolation arm and neutral line on the coupling characteristics of the antenna array are analyzed,and the coupling mode selected by the roar pair is simulated and tested to verify whether it meets the design requirements.更多还原