In system simulation, I can properly simulate the cancellation of two CW signal path which are known to have 180 degree phase difference by ploting the output specrum amplitude. Unfortunalty, when there is a mixer in one of those two signal path, the siulation doesn't work anymore. Do you have a model for system model for mixer which deal properly with the phase information or do you have a frequency translating device that can be used with the linear simulation?
Paul
Paul
The original releases of Spectrasys has some issues with the phase of the mixers. This was corrected at least 2 or 3 releases ago. There was another issue associated with coherency which was fixed in the 2003.10 release. In that release and subsequent releases we have an Image Reject Mixer example that illustrates correct mixer phase and coherency.
Rulon VanDyke