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For the widespread, 12-term TMSO calibration of four-sampler vector network analyzers (VNAs), the sensitivity coefficients of the S-parameters of two ports are determined as functions of the deviations of the reflection coefficients of the one-port calibration standards and of an imperfect through connection. The expressions obtained, which have been experimentally verified, are suitable for the establishment of the uncertainty budget.
Instrumentation and Measurement, IEEE Transactions on (Volume:52 , Issue: 2 )
Date of Publication: April 2003