Wandering Spurs in MASH 1-1 Delta-Sigma Modulators

Files in This Item:
File Description SizeFormat 
wanderingspur_finalrev.pdf12.87 MBAdobe PDFDownload
Title: Wandering Spurs in MASH 1-1 Delta-Sigma Modulators
Authors: Donnelly, Yann
Kennedy, Michael Peter
Permanent link: http://hdl.handle.net/10197/10697
Date: 29-Jan-2019
Online since: 2019-05-29T09:11:36Z
Abstract: Wandering spurs are a little-studied phenomenon seen in MASH and SQ-digital delta-sigma modulators. They take the form of frequency-modulated spurs which periodically appear in-band. Since modulators are often employed as divide ratio controllers in fractional-N phase lock loops, these spurs can feed into the output phase noise spectrum. In this paper, we explain the mechanism which creates the wandering spurs and offer a prediction for the behavior of these spurs in the MASH 1-1 modulator. Simulation results are presented which confirm our theoretical predictions.
Funding Details: Enterprise Ireland
Irish Research Council
Science Foundation Ireland
Type of material: Journal Article
Publisher: IEEE
Journal: IEEE Transactions on Circuits and Systems I: Regular Papers
Start page: 1
End page: 14
Copyright (published version): 2019 IEEE
Keywords: Wandering spurPLLMASHExperimentalModulatorDelta-sigmaSpectrumSpurPhase lock loopFrequency modulation
DOI: 10.1109/tcsi.2019.2893435
Language: en
Status of Item: Peer reviewed
Appears in Collections:Electrical and Electronic Engineering Research Collection

Show full item record

Google ScholarTM



This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. For other possible restrictions on use please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.