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Electronics => Projects, Designs, and Technical Stuff => Topic started by: Mark on October 15, 2021, 11:14:24 am

Title: Importing a frequency domain plot into AWG?
Post by: Mark on October 15, 2021, 11:14:24 am

I can record a time-domain waveform and upload it to an AWG to recreate the signal. 

If I have a frequency-domain plot from a spectrum analyser, can I use that to generate an AWG signal with the same harmonic content? 
Ideally I would want to automate the process, not manually enter every peak on the frequency plot. 

Thnak you.
Mark. 

Title: Re: Importing a frequency domain plot into AWG?
Post by: jeremy on October 15, 2021, 11:24:21 am

The issue is that a time domain plot is not equal to a frequency domain plot on a spectrum analyser; the spectrum analyser does not capture the signal phase.

But I don’t see why you couldn’t just do an inverse Fourier transform and then use that (assuming the AWG has enough bandwidth); the time domain signal will be all messed up because you will need to make up the phase data though.