WR-28功率基准系统中等效源反射系数校准研究

doi:10.3969/j.issn.1000-1158.2012.01.15

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Abstract The equivalent source reflection coefficient is an important parameter to determine the effective efficiency of the calorimeter and analyze the uncertainties and transfer power standard in WR-28 power in the reference system. And it is irrespective of the signal generator in this power system,only depends on the directional coupler connected with the calorimeter.Three measurement methods: traditional three ports method,the direct calibration method and Shimaoka K method are introduced.The experiments are first operated with Shimaoka K method in 26.5~40 GHz,to measure the equivalent source reflection coefficient of the directional coupler.The best method is determined by analyzing and comparing the results obtained from the three methods.The experiment results show that Shimaoka K method is not only feasible,but also the best choice in WR-28 power standard system due to its comprehensive advantages.The uncertainty of equivalent source reflection measurement is also evaluated by the Shimaoka K method.

Key words： Metrology WR-28 power standard Equivalent source reflection coefficient Direct calibration method Shimaoka K method Uncertainty

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TB973

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	Articles by authors
	DAI Ming-zhen
	CUI Xiao-hai
	LIU Xin-meng

Cite this article:

DAI Ming-zhen,CUI Xiao-hai,LIU Xin-meng. Research on Calibration of the Equivalent Source Reflection Coefficient in WR-28 Power Standard System[J]. Acta Metrologica Sinica, 2012, 33(1): 68-72.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2012.01.15 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2012/V33/I1/68