车载波束波导天线结构系统研究与设计

发布时间：2018-03-21 03:01

本文选题：毫米波　切入点：波束波导　出处：《西安电子科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：近年来,随着国内天线技术的不断发展,毫米波天线在我国国防科技领域发挥着越来越重要的作用。利用波束波导传输毫米波具有损耗低、频带宽、易维护等诸多优点,对该类型天线的研究具有重要意义。本文以某毫米波车载波束波导天线的研制为背景,着重对其结构分系统的设计、仿真计算、测试等方面开展研究。经实际测试结果表明本天线结构系统具有良好的反射面精度、轴系精度和波束传输精度,达到了系统的指标要求。本文的主要内容包括：首先,对波束波导天线基础的传播理论进行概要介绍,通过对车载波束波导天线基本结构组成的分析研究,依次对天线反射体、天线座、载车及波束传输系统等结构部分的总体方案进行说明论证。然后,从制定的总体方案出发,严格按照系统的可靠性、安全性、维修性及三防性要求,进而对系统中各组成部分的结构进行了具体的工程设计研究。然后,对系统的关键性能指标进行了分析计算。关键指标的分析计算包括天线反射体的主面精度分析、轴系精度分析以及载车的承载强度分析等。利用先进的有限元分析软件MSC.Patran/Nastran,将天线主反射体建立整体有限元模型,并进行了天线典型工况下的主面精度拟合计算,经验证,各项仿真分析结果基本反应了天线的真实受力状态,为同类天线的研制提供了重要的设计依据。最后,通过天线系统的现场指标测试,天线各项指标均满足技术要求。尤其是电性能的指标均达到设计预期,证明了波束传输系统设计工作的正确性。本文作为车载波束波导天线结构系统研制工作的技术总结,对该特殊型式天线结构系统的主要结构特点进行了工程介绍,为相关结构型式天线的研制提供了一定的技术依据。
[Abstract]:In recent years, with the development of antenna technology in China, millimeter wave antenna plays a more and more important role in the field of national defense science and technology. Using beam waveguide to transmit millimeter wave has many advantages, such as low loss, frequency bandwidth, easy maintenance and so on. It is of great significance to study this type of antenna. In this paper, based on the development of a millimeter-wave on-board beam-guide antenna, the design and simulation of its structural subsystem are emphasized. The test results show that the antenna structure system has good precision of reflector, shafting and beam transmission, which meets the requirements of the system. The main contents of this paper are as follows: first, The propagation theory of beam waveguide antenna is introduced briefly. By analyzing and studying the basic structure of beam waveguide antenna, the reflector, antenna base, The overall scheme of the structural part, such as the vehicle loading and beam transmission system, is explained and demonstrated. Then, from the overall plan, strictly according to the system reliability, security, maintainability and three defense requirements, Then, the structure of each component of the system is studied in detail. Then, the key performance indexes of the system are analyzed and calculated. The analysis and calculation of the key indexes include the precision analysis of the main plane of the antenna reflector. Using the advanced finite element analysis software MSC.Patran-Na to establish the integral finite element model of the antenna main reflector, and carry out the precision fitting calculation of the main plane under the typical working condition of the antenna. The simulation results basically reflect the real force state of the antenna, and provide an important design basis for the development of the same kind of antenna. Finally, the field index test of the antenna system is carried out. All the antenna specifications meet the technical requirements, especially the electrical performance indexes are up to the design expectation, which proves the correctness of the design work of the beam transmission system. This paper is a technical summary of the research and development of the antenna structure system of the on-board beam waveguide. The main structural characteristics of the special type antenna structure system are introduced in this paper, which provides a certain technical basis for the development of the related structural type antenna.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN820

【相似文献】