(@paulh02)
For reference schema of IQ tayloe mixer.All source code is on https://github.com/paulh002/sdrberry and https://github.com/paulh002/SoapyHifiBerry#include <fftw3.h>#include...
Yes, you're right. If you do software and hardware at the same time is asking for trouble :)It was software after all I had to swap the output of the fft. Thanks...
ello Rick,Thanks for your explanation. So if my fft is generating a mirror image like your first picture I am executing a real value fft? I was expecting to execute...
Hello Philip,Thanks, I think that a good idea. I will make a generator and let it sweep and see what the FFT does. But the reason that I think it is not the IQ signal...
Yes, they are. 1 clock at 4 times fs and a divide by 4 to generate 2 clocks with 90 degree difference
The clocks are in 90 degree phase. I use a divider to generate phase and 90 degree phase signal. But the answer from Kaz is not correct. The negative frequencies...
Ok, thanks.Will do some measurements, maybe something wrong with the IQ signal. Thanks for your reply.
So in-principle I can display the spectrum from -fs/2 till +fs/2 if the IQ numbers are correct. That is 90 degree phase shift.
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