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Decimation Filters for High-Speed Delta-Sigma Modulators With Passband Constraints: General Versus CIC-Based FIR Filters
Linköping University, Department of Electrical Engineering, Computer Engineering. Linköping University, The Institute of Technology.ORCID iD: 0000-0003-3470-3911
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, The Institute of Technology.
2015 (English)In: 2015 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS), IEEE conference proceedings, 2015, 2205-2208 p.Conference paper, Published paper (Refereed)
Abstract [en]

For high-speed delta-sigma modulators the decimation filters are typically polyphase FIR filters as the recursive CIC filters can not be implemented because of the iteration period bound. In addition, the high clock frequency and short input word length make multiple constant multiplication techniques less beneficial. Instead a realistic complexity measure in this setting is the number of non-zero digits of the FIR filter tap coefficients. As there is limited control of the passband approximation error for CIC-based filters these must in most cases be compensated to meet a passband specification. In this work we investigate the complexity of decimation filters meeting CIC-like stopband behavior, but with a well defined passband approximation error. It is found that the general approach can in many cases produce filters with much smaller passband approximation error at a similar complexity.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2015. 2205-2208 p.
Series
IEEE International Symposium on Circuits and Systems, ISSN 0271-4302
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:liu:diva-114500DOI: 10.1109/ISCAS.2015.7169119ISI: 000371471002135ISBN: 978-1-4799-8391-9 (print)OAI: oai:DiVA.org:liu-114500DiVA: diva2:790454
Conference
IEEE International Symposium on Circuits and Systems (ISCAS)
Funder
eLLIIT - The Linköping‐Lund Initiative on IT and Mobile Communications
Available from: 2015-02-24 Created: 2015-02-24 Last updated: 2016-04-07

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Gustafsson, OscarJohansson, Håkan

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf