Patent ID: 6097194
Filing Date: 2000-08-01
Classification: G01R,H03M

Abstract:
A method for obtaining transfer characteristics of a device under test (DUT) as a function of frequency, the method comprising the steps of:measuring a complex response of the DUT by the steps of:applying a sine sweep x.sub.1 [n] to an input of the DUT, with n designating a time index;measuring a response signal y.sub.1 [n] at an output of the DUT;applying a cosine sweep x.sub.2 [n] to an input of the DUT at a fixed time interval from the step of applying the sine sweep x.sub.1 [n] to the input of the DUT, and such that the cosine sweep x.sub.2 [n], at the same frequency, has a phase difference of 90 degrees with respect to the sine sweep x.sub.1 [n];measuring a response signal y.sub.2 [n] at the output of the DUT.