Updates to the traceability of millimeter-wave power measurements at NIST

Metrological traceability helps ensure the reliability of measurements by allowing them to be compared with established international standards with well-understood uncertainties. A thorough uncertainty analysis is therefore necessary to provide traceable measurements. In this paper, we summarize recent updates to the measurement procedures and uncertainty analysis for NIST's calibrations of power sensors with WR-15 connectors. The improvements include a more detailed uncertainty analysis with a more complete treatment of type A uncertainty, and the establishment of traceability of DC voltage measurements and scattering parameter measurements to primary standards.