UPDATE:
Hello,I am reading the mathematical derivation manual shown below.
In the red arrow that is a situation where we have two signals on the same frequency.
How its possible that two signals could stay individual on the same frequency.
on every frequency we have amplitude and phase .
I know the I/Q diagrams but its too abstract.
I cant understand how there is an amplitude and phase on a certainfrequency and it canhide inside two combined signals?
Thanks.