Evaluation of uncertainty due to excess heating by an adiabatic line in calorimetric measurement of RF power

Author

Inoue, T.

Author_Institution

Electrotech. Lab., Ibaraki, Japan

fYear

2000

fDate

14-19 May 2000

Firstpage

164

Lastpage

165

Abstract

We are developing two broadband RF power standards. One is based on 7 mm coaxial line with APC 7 connector for 10 MHz-18 GHz and the other is based on 2.9 mm coaxial line with K connector for 10 MHz-40 GHz. The power measurement principle is calorimetric isothermal control. In these measurements, the effect of excess heating by the adiabatic line becomes important. In the present work, its evaluation method is presented and experimental results are described.

Keywords

Calibration; Calorimetry; Coaxial cables; Heat losses; Measurement standards; Measurement uncertainty; Microwave measurement; Power measurement; Power meters; 10 MHz to 18 GHz; 10 MHz to 40 GHz; 2.9 mm; 7 mm; RF load reflection coefficient; adiabatic line; broadband RF power standards; calorimetric isothermal control; calorimetric measurement; excess heating; heat loss ratio; loss ratio measurement; power measurement principle; power meter calibration system; uncertainty evaluation; Calibration; Coaxial components; Connectors; Frequency measurement; Heating; Isothermal processes; Loss measurement; Power measurement; Radio frequency; Temperature control;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements Digest, 2000 Conference on

Conference_Location

Sydney, NSW, Australia

Print_ISBN

0-7803-5744-2

Type

conf

DOI

10.1109/CPEM.2000.850929

Filename

850929