Evaluation of measurement uncertainty when calibrating power analyzers of high-frequency signals in coaxial paths

IF 0.1 Q4 INSTRUMENTS & INSTRUMENTATION
S. Shevkun, Maryna Dobroliubova, Evhen Lapko
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引用次数: 0

Abstract

Implementation of modern requirements for the quality and stability of radio communications, including the required data rate in industrial and atmospheric jamming, is impossible without accurate measurements of signal power at the output of transmitting devices in the transmitter-antenna section. Such measurements are performed using power analyzers that measure both incident and reflected waves. These parameters allow calculating the standing wave ratio, which makes it possible to ensure optimal coordination of the transmitter with antenna, the required power modes and the efficiency of the transmitter as a whole. The paper presents main results of the research on the evaluation of measurement uncertainty when calibrating of the analyzers of the throughput power of high-frequency signals in coaxial paths. The structural scheme and equations (model) of measurements, and features of calculating uncertainty budget are described. The basic principles for obtaining continuous calibration results in the whole range of measurements are revealed. An example of presenting calibration results in graphical form is given. The content of quantitative and qualitative indicators of corrections that must be taken into account during calibration to achieve the highest accuracy of measurements is revealed. It is expedient to use practical results of researches on calibration of throughput power meters in many areas connected with telecommunications and transmission of radio signals.
同轴路径高频信号功率分析仪校准时测量不确定度的评定
如果不准确测量发射机天线部分中发射设备输出端的信号功率,就不可能实现无线电通信质量和稳定性的现代要求,包括工业和大气干扰中所需的数据速率。这种测量是使用测量入射波和反射波的功率分析器来执行的。这些参数允许计算驻波比,这使得可以确保发射器与天线的最佳协调、所需的功率模式以及发射器整体的效率。本文介绍了同轴通路高频信号通过功率分析仪校准时测量不确定度评定的主要研究结果。介绍了测量的结构方案和方程(模型),以及不确定度预算的计算特点。揭示了在整个测量范围内获得连续校准结果的基本原理。给出了以图形形式显示校准结果的示例。揭示了在校准过程中必须考虑的定量和定性校正指标的内容,以实现最高的测量精度。在与电信和无线电信号传输相关的许多领域中,使用吞吐量功率表校准的实际研究结果是有利的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Ukrainian Metrological Journal
Ukrainian Metrological Journal INSTRUMENTS & INSTRUMENTATION-
自引率
0.00%
发文量
21
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