CIPM MRA COMPARISON REPORTS
CCEM.RF-K28.W
Authors
https://orcid.org/0000-0002-0601-8696 National Metrology Centre, Agency for Science, Technology and Research (NMC, A*STAR) Singapore
https://orcid.org/0000-0002-4022-7061 Physikalisch-Technische Bundesanstalt (PTB) Germany
https://orcid.org/0000-0002-4927-7209 National Institute of Standards and Technology (NIST) United States
https://orcid.org/0009-0001-9486-4269 National Institute of Standards and Technology (NIST) United States
https://orcid.org/0009-0003-1381-8725 National Institute of Standards and Technology (NIST) United States
https://orcid.org/0000-0002-8900-140X National Institute of Standards and Technology (NIST) United States
https://orcid.org/0000-0003-4675-4636 National Institute of Standards and Technology (NIST) United States
https://orcid.org/0000-0001-6907-2414 Laboratoire national de métrologie et d'essais (LNE) France
https://orcid.org/0000-0003-4144-3775 National Physical Laboratory (NPL) United Kingdom
https://orcid.org/0009-0009-8639-5392 National Physical Laboratory (NPL) United Kingdom
https://orcid.org/0000-0002-7457-6585 Korea Research Institute of Standards and Science (KRISS) Korea, Republic of
Abstract
This report summarizes the results of the measurements performed as a CIPM Key Comparison (CCEM.RF-K28.W) on high frequency power in waveguide among NIM, LNE, NPL, PTB, UME, CMI, SCL, NMC, KRISS and NIST. The comparison measurements were performed between November 2022 and December 2024. In this comparison, the effective efficiency and calibration factor of two WR-42 (WG20 or R220) waveguide thermistor mounts were measured in the frequency range 18 GHz to 26.5 GHz.
Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/.
The final report has been peer-reviewed and approved for publication by the CCEM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).