角锥喇叭天线增益校准.pdfVIP

摘 要 I 摘 要 高精度的天线测量技术成为天线的研制生产过程中的一个十分重要的因素。 在天线参数测量的过程中，常会用到标准增益喇叭天线作为参考天线。因此，标 准增益喇叭天线增益值的准确度很大程度上影响了被测天线增益测量的准确及精 确度。而在标准喇叭天线标定的过程中，周围有诸多因素对增益值准确度产生影 响。 本文首先介绍了增益的定义及各种增益测量方法，概述了标准增益天线的定 义及其校准。标准增益喇叭天线的设计和增益理论计算，并给出仿真结果。详细 分析了增益测量中影响测量不确定度的各种因素，并给出具体的计算公式，给出 了部分计算值。结合实例分析和第三章的误差理论分析，对本文实测喇叭天线的 增益值进行精确校准，标定后的增益值和理论值误差极小，验证了本文分析的合 理性。为了减少复杂公式计算量进行了误差分析编程。本文最后所阐述的外推测 量法，是能更精确测量天线增益等参数的方法，随着技术设备的发展和计算机处 理数据能力的大幅提高，也会时常使用到这种测量方法。 本文主要介绍了天线的定标，理论分析与实际测量相结合，取得多次增益测 量结果后，与仿真和理论值都进行了对比分析。详细考虑了每项误差，通过对其 测量值进行修正校准。验证了本文所提出的分析方法的可行性。 关键词：标准增益 误差分析 喇叭天线 校准 Abstract III Abstract High precision technique of the antenna measurement has become a very important factor in the process of the development and production of antenna. In the process of antenna parameters measurement, a standard gain horn antenna is often used as a reference antenna. So the accuracy gain value of a standard horn antenna greatly influences the accuracy and precision of the measured antenna gain. And in the process of standard horn antenna calibration, a number of factors affect the accuracy of the gain value. In the first, the paper introduces the definition of the gain and gain measurement methods, summarized the definition of standard gain antenna and its calibration. Design and the theoretical calculation of the standard gain horn antenna. And the simulation result is given. Various factors is analyzed in detail in affecting uncertainty of measurement, and gives a concrete calculation formula; part of the calculated value is given. Combined with instance analysis and theo