Articles | Volume 22
https://doi.org/10.5194/ars-22-35-2024
https://doi.org/10.5194/ars-22-35-2024
08 Nov 2024
 | 08 Nov 2024

Uncertainties of S-Parameter Measurements in Rectangular Waveguides at PTB

Andreas Tobias Schramm, Frauke Kathinka Helene Gellersen, and Karsten Kuhlmann

Data sets

KCDB BIPM https://www.bipm.org/kcdb/

Model code and software

Software EMPIR 17SIP08 NeWITT v1 Karsten Kuhlmann and Thorsten Probst https://doi.org/10.24433/CO.2045615.v1

METAS UncLib Federal Institute of Metrology (METAS) https://www.metas.ch/metas/en/home/fabe/hochfrequenz/unclib.html

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Short summary
A systematic analysis of measurement uncertainties in rectangular waveguide calibrations is condcuted. Uncertainty budgets for different waveguide bands are examined, individual uncertainty contributions are discussed and the significant impact of connection repeatability is highlighted. Consequently, an investigation into misaligned waveguide interfaces is undertaken, emphasizing the importance of precise alignment, supported by simulation and experimental data.