WEMA27: About Sampling Rates, Master Clock Rates, and Nyquist Zones on the USRP X440

Presentation Abstract
Recent advances in ADC and DAC technology have enabled the practical realization of direct-sampling architectures, which provide access to the full RF bandwidth provided by the ADC/DAC. However, there are unique considerations that need to be made regarding master clock rate selection, frequency planning, aliasing effects, Nyquist zones, and spur and distortion avoidance. The USRP X440 uses a direct-sampling architecture and thus operates differently from other USRP devices. Attendees will gain an understanding of the challenges of this architecture, and how to make informed decisions when using the X440.