热电式与测热式微波功率标准的比较
Comparison between Thermoelectric and Bolometric Microwave Power Standards
摘要：
本文介绍了基于热电传感器的微波功率标准与基于测热传感器的类似标准的比较。测量已经进行了与经典的双型微量热计，配有N-连接器测试端口，适用于0.05 - 18 GHz的频带。一个适当的被测定义是适合于这两种标准类型。通过解释每种情况下微量热计响应的数学模型，应用高斯误差传播进行系统精度评估。结果突出了每种功率标准类型的优点和缺点。
英文摘要：
In the paper, a comparison is described of the microwave power standard based on thermoelectric sensors against an analogous standard based on bolometric sensors. Measurements have been carried out with the classical twin-type microcalorimeter, fitted with N-connector test ports suitable for the frequency band 0.05 - 18 GHz. An appropriate measurand definition is given for being suitable to both standard types. A system accuracy assessment is performed applying the Gaussian error propagation through the mathematical models that interpret the microcalorimeter response in each case. The results highlight advantages and weaknesses of each power standard type.
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