Calibration of a Wideband IF Nonlinear Vectorial Network Analyser

Unlike the Vectorial Network Analyser, the Nonlinear Vectorial Network Analyser imposes a wideband intermediate frequency (IF) detection (a few kHz instead of Hz). In this paper, the influence of the resulting signal-to-noise degradation on the calibration accuracy is analysed. The statistical properties of a standard calibration are compared to a stochastically founded method based on real experimental data.