校正高达30兆赫范围内的高频及超高频功率表

O. Velychko, Serhii Kursin, Valentyn Gaman
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引用次数: 0

摘要

高频(HF)和超高频(UHF)功率测量应用于无线电电子设备的开发和设计以及测试,调试或维修等各个行业。由于这类测量是无线电工程和通信领域计量保障的基本测量类型之一,因此必须保证工作标准和测量仪器的校准对宽频率和动态范围内基本常数标准的计量可追溯性。乌克兰同轴路径中电磁振荡功率单位的国家主要标准规定了0.03 ~ 18 GHz频率范围内的功率单位,瓦特表和功率转换器的命名频率范围要宽得多——从9 kHz开始,某些类型的转换器甚至从直流电开始。研究了各国国家实验室对高频和超高频功率测量的校准和测量能力,为解决扩大高频和超高频功率计校准频率范围的问题提供了可能。对国际计量局关键比较库中电阻为50欧姆的同轴路径的校准系数和效率系数数据进行了分析。对可能的解决方案进行了研究,并开发了一种方案,使用Boonton 9242 RF精密电压表以电压和电阻单位再现功率单位,用于校准罗德与施瓦茨公司频率范围为0.1…30 MHz的测量传感器NRP-Z55和NRP6A。在此基础上建立了再现模型,估计了再现模型各分量对标定结果的贡献和模型各分量的不确定度。根据所提出的射频信号功率测量传感器标定模型,编制了测量不确定度预算。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
CALIBRATION OF HIGH AND ULTRA-HIGH FREQUENCY POWER METERS IN THE RANGE OF UP TO 30 MHZ
High-frequency (HF) and ultra-high-frequency (UHF) power measurements are applied in various industries both in the development and design of radio-electronic equipment and in testing, commissioning, or repair. Since such measurements are one of the basic types of measurement for metrological support in the field of radio engineering and communication, it is necessary to ensure metrological traceability of the calibration of working standards and measuring instruments to standards on fundamental constants in wide frequency and dynamic ranges. The National primary standard of Ukraine for units of power of electromagnetic oscillations in coaxial paths reproduces units of power in the frequency range 0.03 … 18 GHz, and the frequency range of the nomenclature of watt-meters and power converters are much wider – from 9 kHz, and for some types of converters even from direct current. The calibration and measurement capabilities of HF and UHF power measurement of national laboratories of different countries were studied for the possibility of solving the issue of expanding the frequency range of calibration of HF and UHF power meters. The analysis of data on the calibration factor and the efficiency factor in coaxial paths with a resistance of 50 Ohm in the Database of Key Comparisons of the International Bureau of Weights and Measures was carried out. A study of possible solutions was carried out and a scheme was developed to reproduce a unit of power by units of voltage and resistance using a precision voltmeter Boonton 9242 RF for the calibration of measuring transducers Rohde&Schwarz NRP-Z55 and NRP6A in the frequency range from 0.1 … 30 MHz. A reproduction model was created based on the developed scheme, and the contributions of the reproduction model components to the calibration result and the corresponding uncertainties of the model components were estimated. The measurement uncertainty budget was drawn up based on the proposed calibration model of radio signal power measuring transducers.
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