相控阵天线快速测量与校准技术研究

发布时间：2018-04-28 10:44

本文选题：相控阵天线 + 配相　；参考：《西安电子科技大学》2014年硕士论文

【摘要】：自从相控阵天线问世以来,天线的校准和测量一直是天线研究领域的一个关键课题。本文结合工作生产实际,对相控阵天线相位的校准和测量进行了分析研究。相控阵天线的主要性能指标如增益、波束宽度、副瓣电平等都是由天线口面的幅度相位分布来决定的,要进行天线特性分析就要从幅度和相位着手,由于天线采用空间馈电的工作方式,天线设计及加工完成后,天线的幅度分布基本无法改变,只能通过相位的调整来对天线的性能进行改善。如何让天线相位分布达到最佳状态,本文引入了配相工作,通过对相位修正以保证相控阵天线的性能达到设计要求。本文针对天线的测量与校准技术主要从下面几个方面进行重点研究:一、针对天线的产生及应用进行描述,从而提出了天线测量与校准技术的意义及目的,结合国内外在天线测量与校准方面的技术成果,提出本文的技术研究思想。二、对天线的构成及理论进行系统描述,其中包括天线阵面的构成,,馈电方式、移相器以及天线的扫描理论和技术特点等。三、介绍了相控天线的测量特点,从误差方面着手,分析研究了误差的类型,成因,以及误差对天线幅度和相位的影响,从而得出误差对天线性能的影响。四、从相角入手引入相位的概念,描述了测相原理以及测相的方法,结合工作实际,给出了相位测量和校准具体方法五、文章从天线远场坊线图测量入手,介绍了远场测量的条件,原理以及具体的测量方法,同时结合方向图仿真技术,针对天线在不同相位条件下进行方向图远场测量及仿真,对比在不同条件相位下方向图的技术指标,得到天线的最佳相位状态分布,从而确保天线在正常工作状态下的战术能。文章从上述方面进行系统研究,对指导生产、提高工作效率具有较大的现实意义。
[Abstract]:Since the advent of phased array antenna, antenna calibration and measurement has been a key issue in antenna research field. In this paper, the phase calibration and measurement of phased array antenna are analyzed. The main performance parameters of phased array antenna, such as gain, beam width, sidelobe level and so on, are determined by the amplitude and phase distribution of antenna aperture. Because the antenna is operated by space feed, the amplitude distribution of the antenna can not be changed basically after the design and processing of the antenna is completed, so the performance of the antenna can only be improved by adjusting the phase. In this paper, phase alignment is introduced to ensure the performance of phased array antenna to meet the design requirements. In this paper, the measurement and calibration technology of antenna is mainly studied from the following aspects: first, the generation and application of antenna are described, and the significance and purpose of antenna measurement and calibration technology are put forward. Combined with the technical achievements of antenna measurement and calibration at home and abroad, the technical research idea of this paper is put forward. Secondly, the structure and theory of antenna are systematically described, including antenna array surface, feed mode, phase shifter and scanning theory and technical characteristics of antenna, etc. Thirdly, the measurement characteristics of phase-controlled antenna are introduced. From the error aspect, the types and causes of errors are analyzed and studied. The effects of errors on antenna amplitude and phase are also analyzed, and the effects of errors on antenna performance are obtained. Fourthly, the concept of phase is introduced from the angle of phase, the principle of phase measurement and the method of phase measurement are described. Combined with the actual work, the specific methods of phase measurement and calibration are given. This paper introduces the conditions, principles and specific measurement methods of far field measurement. At the same time, combined with the pattern simulation technology, the far field measurement and simulation of the antenna under different phase conditions are carried out. The optimum phase state distribution of the antenna is obtained by comparing the technical parameters of the pattern under different phase conditions, thus ensuring the tactical capability of the antenna under normal working conditions. This article carries on the systematic research from the above aspect, has the bigger realistic significance to the instruction production, the enhancement work efficiency.
【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】：TN821.8

【共引文献】