Observations of the differences between closed-loop behavioral and feed-forward model simulations of fractional-N frequency synthesizers
Abstract
Conventionally, a fractional-N synthesizer is simulated using a closed-loop behavioral model and the simulations can be very time-consuming. With the analysis by Perrott et al., a more straightforward model, namely the feed-forward model, for the fractional-N frequency synthesizer is available. The feedforward model simulations provide quick, relatively accurate evaluation of fractional-N synthesizer divider controller designs. In this work, we point out several differences in the closed loop behavioral model simulations performed in the CppSim environment and the feed-forward model simulations and discuss their significance on the base of analysis and simulation results.
Publication Title
2017 28th Irish Signals and Systems Conference, ISSC 2017
Recommended Citation
Mai, D., Mo, H., & Kennedy, M. (2017). Observations of the differences between closed-loop behavioral and feed-forward model simulations of fractional-N frequency synthesizers. 2017 28th Irish Signals and Systems Conference, ISSC 2017 https://doi.org/10.1109/ISSC.2017.7983621
