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Three-Port Vector-Network-Analyzer Calibrations using the NIST Microwave Uncertainty Framework



Jeffrey Jargon, Dylan Williams, Aric Sanders


We developed methods for calibrating three-port vector network analyzers (VNAs) and propagating correlated uncertainties using the NIST Microwave Uncertainty Framework. We describe our calibration procedures, which utilize measured wave-parameters rather than scattering parameters to account for switch-term corrections, and present results for a three-port power splitter. We compare our calibrated measurements with those performed using the firmware of a commercial VNA, and show the results agree to within our confidence intervals at most frequencies.
Proceedings Title
92nd ARFTG Microwave Measurement Conference
Conference Dates
January 20-23, 2019
Conference Location
Orlando, FL, US


calibration, coaxial, power splitter, physical models, three-port, uncertainty, vector network analyzer


Jargon, J. , Williams, D. and Sanders, A. (2019), Three-Port Vector-Network-Analyzer Calibrations using the NIST Microwave Uncertainty Framework, 92nd ARFTG Microwave Measurement Conference, Orlando, FL, US, [online], (Accessed May 25, 2024)


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Created January 18, 2019, Updated April 14, 2022