Variable modulus delta-sigma modulation in fractional-N frequency synthesis

A variable modulus delta-sigma modulator can generate any rational DC value with absolute accuracy. When applied in fractional-N frequency synthesis it allows for generating a series of frequencies with exact channel spacing for a given radio standard. It removes the problem of approximating frequen...

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Bibliographic Details
Published inElectronics letters Vol. 43; no. 25; pp. 1399 - 1400
Main Authors BORKOWSKI, M. J, KOSTAMOVAARA, J
Format Journal Article
LanguageEnglish
Published London Institution of Electrical Engineers 06.12.2007
Subjects
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Oscillators, resonators, synthetizers
Signal convertors
Sigma-delta modulation
Modulator
Frequency synthesizer
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Summary:A variable modulus delta-sigma modulator can generate any rational DC value with absolute accuracy. When applied in fractional-N frequency synthesis it allows for generating a series of frequencies with exact channel spacing for a given radio standard. It removes the problem of approximating frequencies and resulting constant phase drift.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0013-5194
1350-911X
DOI:10.1049/el:20072563