Comparison Between NPL and NMIJ of Diameter and Scattering Parameter Measurements of Precision 1.85 mm Coaxial Air Lines

Author

Horibe, Masahiro ; Ridler, Nick M.

Author_Institution

Nat. Metrol. Inst. of Japan, Nat. Inst. of Adv. Ind. Sci. & Technol., Tsukuba, Japan

Volume

60

Issue

7

fYear

2011

fDate

7/1/2011 12:00:00 AM

Firstpage

2327

Lastpage

2334

Abstract

This paper summaries a bilateral comparison of dimensional measurements of the diameters of two precision 1.85-mm coaxial air lines and associated electrical scattering parameter measurements. The measurements were independently made by two national metrology institutes: the National Metrology Institute of Japan and the National Physical Laboratory. The laboratories also calculated the characteristic impedances and their uncertainties based on the measured diameter values and uncertainties. The difference between the characteristic impedances calculated by the two laboratories for the two lines was less than 0.2 Ω. The uncertainty of this difference at a 95% level of confidence was 0.3 Ω. The scattering parameter measurement results agreed well at almost all comparison frequencies from 5 to 65 GHz.

Keywords

S-parameters; coaxial cables; electric impedance measurement; dimensional measurements; frequency 5 GHz to 65 GHz; precision coaxial air lines; scattering parameter measurements; Conductors; Frequency measurement; Measurement uncertainty; Scattering parameters; Standards; Transmission line measurements; Uncertainty; Characteristic impedance; measurement comparison; precision 1.85-mm coaxial air lines; scattering parameter;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2011.2135510

Filename

5772929