Hei! I have a very general question regarding the function of the digital mixer as part of the USRP motherboard-DDC:
Since the RF signal is already mixed to baseband by the synthesizer component of e.g. the LFRX daugtherboard, I do not understand why we need another mixer after the ADC as part of the DDC. Probably this is more a question related to DDCs in general but it would be great if you could provide me with an explanation for that. Thanks in advance cheers!
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