How to Find amplitude and phase of IM3 signal with respect to fundamental tones
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Hello Everyone, i am doing two tone characterization of power amplifier.after giving the 2 tone input signal to amplifier i have had a output signal with two tones and IM products. i am interested in lower and upper IM3 products.i want to know that how i can calculate the amplitude and phase of IM3 products with respect to fundamental tones.i am plotting the signal in frequency domain.you can find the output signal "y2s" in attachment. >> fs=40e6; >> N=20e3; >> plot(-fs/2:fs/N:fs/2-fs/N,db(fftshift(fft(y2s))));
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Star Strider
on 15 Apr 2014
Edited: Star Strider
on 15 Apr 2014
When I plot it, your ‘y2s’ data looks strange. Is it the fft of your signal, or something else?
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