Analysis of Wandering Spur Patterns in a Fractional- Frequency Synthesizer With a MASH-Based Divider Controller
The Multi-stAge noise SHa** Digital Delta-Sigma Modulator (MASH DDSM), which is
commonly used as a divider controller in a fractional-N frequency synthesizer, can produce …
commonly used as a divider controller in a fractional-N frequency synthesizer, can produce …
On the mechanisms governing spurious tone injection in fractional PLLs
In fractional phase-locked loop driven by ΣΔ modulators there can be spurious tones in the
power spectral density (PSD) of output signals even if the PSDs of the sequences used to …
power spectral density (PSD) of output signals even if the PSDs of the sequences used to …
A Design Method for Nested MASH-SQ Hybrid Divider Controllers for Fractional- Frequency Synthesizers
Fractional-N frequency synthesizers contain a divider controller which implements the
fractional division. The interaction between the quantization noise from the divider controller …
fractional division. The interaction between the quantization noise from the divider controller …
Comparison of a feed-forward phase domain model and a time domain behavioral model for predicting mismatch-related noise floor and spurs in fractional-N …
MP Kennedy, H Mo, G Hu - 2015 26th Irish Signals and …, 2015 - ieeexplore.ieee.org
Static mismatch between the charge pump up and down currents in a fractional-N frequency
synthesizer is known to elevate the in-band noise floor and to produce spurs. Offset current …
synthesizer is known to elevate the in-band noise floor and to produce spurs. Offset current …
Experimental confirmation of wandering spurs in a commercial fractional-N frequency synthesizer with a MASH 1-1-1 divider controller
Fractional-N frequency synthesizers can exhibit a phenomenon called wandering spurs
which is undesirable in many applications. This paper presents experimental confirmation of …
which is undesirable in many applications. This paper presents experimental confirmation of …
[書籍][B] Wandering Spurs in MASH-Based Fractional-N Frequency Synthesizers: How They Arise and How to Get Rid of Them
D Mai, MP Kennedy - 2022 - books.google.com
Few people know what wandering spurs are; fewer still know how to get rid of them. This
book, which is written by those who raised awareness of wandering spurs, explained how …
book, which is written by those who raised awareness of wandering spurs, explained how …
A noise-canceling charge pump for area efficient PLL design
G Urakawa, H Kobayashi, J Deguchi… - IEICE Transactions on …, 2021 - search.ieice.org
In general, since the in-band noise of phase-locked loops (PLLs) is mainly caused by
charge pumps (CPs), large-size transistors that occupy a large area are used to improve in …
charge pumps (CPs), large-size transistors that occupy a large area are used to improve in …
Simulation of Phase Noise in a Fractional-N Frequency Synthesizer
In this chapter, the fractional-N frequency synthesizer considered and the models of it used
in the simulations in this book are elaborated. Nonlinearity will cause extra noise …
in the simulations in this book are elaborated. Nonlinearity will cause extra noise …
Comparison of the simulated performance of two divider controllers in a fractional-n frequency synthesizer with a piecewise-linear charge-pump nonlinearity
Reducing and ultimately eliminating nonlinearity-induced spurious tones (spurs) is a key
motivation for the design of novel divider controllers for fractional-N frequency synthesizers …
motivation for the design of novel divider controllers for fractional-N frequency synthesizers …