"Observations of the differences between closed-loop behavioral and fee" by Dawei Mai, Hongjia Mo et al.
 

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

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