benchen
Member level 2
I am confused by this. I found most of the diagram of transmitter does the quatrature upconversion in analog domain. And this will cause I Q mismatch. Why do't we do this in digital domain? for example, upconvert the IQ signal to a low IF and add them together in digital domain and then DAC and then use single LO to upconvert to fTX?
Thanks.
Thanks.