全向水平极化天线的研究

发布时间：2018-05-19 21:45

本文选题：水平极化 + 全向天线　；参考：《厦门大学》2014年硕士论文

【摘要】：随着无线通信领域在生活中发挥着越来越重要的作用,天线作为无线通信系统的关键,负责发射和接收电磁波,直接关系到通信质量的好坏,天线技术的指标要求越来越严格,基于无线通信的新需求以及其应用的背景,本文将对无线通信射频识别车辆远程监控领域(UHF特高频频段)的全向水平极化天线的技术展开研究。本文的研究对全向水平极化天线的工程设计具有重要参考意义。本文主要内容包括如下： 1.介绍了本文所展开工作的研究背景和意义,以及国内外对此领域的研究动态和进展,概括了本文的主要工作和内容安排。 2.介绍了天线中的重要参数,并对用于产生水平极化的环形天线的原理进行全面的分析(分电流均匀分布和电流正弦分布两种情况)。 3.详细阐述了典型的爱福特Alford环形天线的基本辐射机理、设计思路以及应用场景,结合相关文献设计了工作频点为2.45GHZ的方形环模型,并分析了该平面全向水平极化天线的各个参数对天线电气性能、辐射性能的影响,包括驻波比、谐振频点和方位面的方向图不圆度,在原有模型基础上,提出了改善的方案,缩减天线的尺寸。 4.简要介绍了业界常用的高频仿真软件以及天线加工与测试的设备,然后本文研制了一款平面全向水平极化天线,工作频点为433.92MHz的方形双层紧凑z字型车辆防盗电子锁天线,在电磁场仿真软件ANSYS HFSS中进行细致精准地仿真,并在其结果的基础上,加工出实物。在微波暗室里实际测试了天线的电气性能和辐射性能,并与仿真结果对比,能够达到设计指标,最后探讨分析了误差产生的原因并提出解决方法,本文为此类天线相关的领域更深入的研究,积累了宝贵的工程经验。
[Abstract]:As the wireless communication field plays a more and more important role in daily life, as the key of wireless communication system, antenna is responsible for transmitting and receiving electromagnetic wave, which is directly related to the quality of communication. Based on the new requirements of wireless communication and the background of its application, this paper will study the omnidirectional horizontal polarization antenna in the field of wireless radio frequency identification vehicle remote monitoring and control (UHF UHF band). The research in this paper has important reference significance for the engineering design of omnidirectional horizontal polarization antenna. The main contents of this paper are as follows: 1. This paper introduces the research background and significance of the work carried out in this paper, as well as the research trends and progress in this field at home and abroad, and summarizes the main work and content arrangement of this paper. 2. The important parameters in the antenna are introduced and the principle of the annular antenna used to generate horizontal polarization is analyzed comprehensively (the uniform distribution of partial current and the sinusoidal distribution of current). 3. In this paper, the basic radiation mechanism, design idea and application scene of the typical Efft Alford ring antenna are described in detail. A square ring model with working frequency of 2.45GHZ is designed in combination with related literature. The effects of the parameters of the planar horizontal polarization antenna on the electrical and radiation performance of the antenna, including standing wave ratio, resonance frequency point and azimuth plane pattern, are analyzed. Based on the original model, an improved scheme is proposed. Reduce the size of the antenna. 4. This paper briefly introduces the high frequency simulation software and the equipment of antenna processing and testing, and then develops a plane omnidirectional horizontal polarization antenna with a square double layer compact z shaped electronic lock antenna with a working frequency of 433.92MHz. In the electromagnetic field simulation software ANSYS HFSS, the detailed and accurate simulation is carried out, and on the basis of the results, the material object is processed. The electrical performance and radiation performance of the antenna are tested in the microwave anechoic chamber, and compared with the simulation results, the design index can be reached. Finally, the causes of the errors are analyzed and the solutions are put forward. In this paper, valuable engineering experience has been accumulated for the further study of this kind of antenna.
【学位授予单位】：厦门大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN821.1

【参考文献】