Calibration errors when neglecting crosstalk

Abstract

While it is standard practice to omit isolation during Vector Network Analyzer calibration of measurement systems probing planar devices, the impact on measurement accuracy due to finite leakage between signal paths has not been quantitatively studied. In this paper a generalization of a calibration comparison method is used to determine error-bounds estimating the effect of neglecting cross-talk during calibration of a two-port VNA system.