Insights into architectural spurs in high performance fractional-N frequency synthesizers
A fractional-N frequency synthesizer inherently exhibits spurs by virtue of the fact that its
output frequency is not an integer multiple of its reference frequency. Until recently, it …
output frequency is not an integer multiple of its reference frequency. Until recently, it …
Reconciliation of Statistical Approaches to Predicting Nonlinearity-Induced Spurs in Fractional- Frequency Synthesizers
X Lu, MP Kennedy - IEEE Transactions on Circuits and Systems …, 2024 - ieeexplore.ieee.org
Fractional-N frequency synthesizers based on phase-locked loops exhibit spurious tones
(spurs) that result from interactions between the accumulated output of the divider controller …
(spurs) that result from interactions between the accumulated output of the divider controller …
A Family of ΔΣ Modulators With High Spur Immunity and Low Folded Nonlinearity Noise When Used in Fractional-Frequency Synthesizers
V Mazzaro, MP Kennedy - … on Circuits and Systems I: Regular …, 2022 - ieeexplore.ieee.org
Phase locked loops for fractional frequency synthesis typically use Digital Modulators
(DDSMs) as their divider controllers. Different types and configurations of DDSMs have been …
(DDSMs) as their divider controllers. Different types and configurations of DDSMs have been …
A stochastic computing sigma-delta adder architecture for efficient neural network design
N Temenos, PP Sotiriadis - … and Selected Topics in Circuits and …, 2023 - ieeexplore.ieee.org
A stochastic computing (SC) adder architecture, based on sigma-delta modulation is
introduced. The operation principle of the stochastic computing sigma-delta (SCSD) adder is …
introduced. The operation principle of the stochastic computing sigma-delta (SCSD) adder is …
Spur immunity in MASH-based fractional-N CP-PLLs with polynomial nonlinearities
V Mazzaro, MP Kennedy - … on Circuits and Systems I: Regular …, 2021 - ieeexplore.ieee.org
Spurious tones appear in the output phase noise spectrum of a fractional-N frequency
synthesizer when nonlinearities are present in the loop. These spurs are generated by the …
synthesizer when nonlinearities are present in the loop. These spurs are generated by the …
Masked dithering of MASH digital delta-sigma modulators with constant inputs using multiple linear feedback shift registers
H Mo, MP Kennedy - … Transactions on Circuits and Systems I …, 2017 - ieeexplore.ieee.org
The output signal of a digital delta-sigma modulator (DDSM) with a constant input may has a
small fundamental period and therefore its spectrum may be characterized by a small …
small fundamental period and therefore its spectrum may be characterized by a small …
The role of charge pump mismatch in the generation of integer boundary spurs in fractional-N frequency synthesizers: Why worse can be better
VS Sadeghi, HM Naimi… - IEEE Transactions on …, 2013 - ieeexplore.ieee.org
Fractional-N frequency synthesizers exhibit spurious tones (spurs). Spurs outside the loop
bandwidth can be attenuated by the loop filter. By contrast, in-band spurs cannot be …
bandwidth can be attenuated by the loop filter. By contrast, in-band spurs cannot be …
Folded noise prediction in nonlinear fractional-N frequency synthesizers
V Mazzaro, MP Kennedy - … on Circuits and Systems I: Regular …, 2021 - ieeexplore.ieee.org
The presence of nonlinearities in a fractional-N frequency synthesizer leads to the
generation of an additional component of noise that appears in the output phase noise …
generation of an additional component of noise that appears in the output phase noise …
Observations concerning the generation of spurious tones in digital delta-sigma modulators followed by a memoryless nonlinearity
K Hosseini, B Fitzgibbon… - IEEE Transactions on …, 2011 - ieeexplore.ieee.org
In mixed-signal systems, nonlinear distortion due to nonideal analog circuitry can act on
quantized digital sequences, giving rise to spurious tones. In this brief, generation of …
quantized digital sequences, giving rise to spurious tones. In this brief, generation of …
Mitigation of “horn spurs” in a MASH-based fractional-N CP-PLL
V Mazzaro, MP Kennedy - … on Circuits and Systems II: Express …, 2020 - ieeexplore.ieee.org
A Fractional-N Charge Pump (CP) PLL with a Multi-stAge noise SHaping (MASH) 1-1-1
divider controller has been reported to exhibit pairs of spurious tones called “horn spurs” …
divider controller has been reported to exhibit pairs of spurious tones called “horn spurs” …