Prediction of the Spectrum of a Digital Delta-Sigma Modulator Followed by a Polynomial Nonlinearity

Prediction of the Spectrum of a Digital Delta-Sigma Modulator Followed by a Polynomial Nonlinearity

This paper presents a mathematical analysis of the power spectral density of the output of a nonlinear block driven by a digital delta-sigma modulator. The nonlinearity is a memoryless third-order polynomial with real coefficients. The analysis yields expressions that predict the noise floor caused...

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Veröffentlicht in:IEEE transactions on circuits and systems. I, Regular papers Regular papers, 2010-08, Vol.57 (8), p.1905-1913
Hauptverfasser: Hosseini, Kaveh, Kennedy, Michael Peter, Lewis, Stephen H, Levy, Bernard C
Format: Artikel
Sprache:eng
Schlagworte:
Blocking
Circuits
Delta modulation
Delta-sigma modulation
Density
Digital
digital delta-sigma modulator (DDSM)
Digital modulation
Digital-to-analog converters
fractional- N frequency synthesizer
Frequency synthesizers
Mathematical analysis
Modulators
Noise generators
Noise shaping
Nonlinearity
Phase noise
Polynomials
Quantization
Spectra
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Beschreibung
Zusammenfassung:This paper presents a mathematical analysis of the power spectral density of the output of a nonlinear block driven by a digital delta-sigma modulator. The nonlinearity is a memoryless third-order polynomial with real coefficients. The analysis yields expressions that predict the noise floor caused by the nonlinearity when the input is constant.
ISSN:1549-8328
1558-0806
DOI:10.1109/TCSI.2009.2039257