Patent ID: 7405575
Filing Date: 2008-07-29
Classification: G01R

Abstract:
1. A method of calibrating a signal path of a signal analysis system for measuring the impedance of a device under test in the signal path comprising the steps of: acquiring sets of samples in the time domain of a signal under test from the device under test via the signal path with the signal path for each set of samples having a selected impedance load; converting the sets of samples of the signal under test in the time domain to a spectral domain representations; characterizing transfer parameters of the device under test within a spectral domain from the spectral domain representations of the sets of samples by computing for each selected impedance load, combined transfer parameters associated with two-port network representations of the of the signal path; retrieving a stored value representing a reference impedance Z processing the combined transfer parameters of the device under test with the reference impedance (Z