Inquiry about the scaling factor used within the signal processing chain within the AD6676.
The data is available at the baseband output as shown in the figure (left one) but the GUI enabled with AD6676 evaluation board plots the spectrum in the bandpass frequency region which is shown in the figure below (right one).
So is it that the GUI internally, does up sampling and modulation on the obtained baseband I and Q data and runs an FFT at the (sort of reconstructed) passband data. If so is there any scaling factor used within just to keep the Pin and Pout same?
Can someone please throw light on how the GUI is able to plot FFT reflecting the passband frequency region when the data obtained is the baseband I and Q data.