Good morning to everybody,
The purpose of my project is to receive IQ data with LT5584 demodulator. the RF modulated signal coming from LTC5598 IQ modulator (QAM16), the LO is set to 40MHz, 0dBm amplitude and it is the same for both circuits.
OK after investigation, it seems that there is a phase shift between modulator and demodulator LO, even if LO was for both the same. I am going to correct it via software