Open AccessBook
Understanding Delta-Sigma Data Converters
TLDR
This chapter discusses the design and simulation of delta-sigma modulator systems, and some of the considerations for implementation considerations for [Delta][Sigma] ADCs.Abstract:
Chapter 1: Introduction.Chapter 2: The first-order delta-sigma modulator.Chapter 3: The second-order delta-sigma modulator.Chapter 4: Higher-order delta-sigma modulation.Chapter 5: Bandpass and quadrature delta-sigma modulation.Chapter 6: Implementation considerations for [Delta][Sigma] ADCs.Chapter 7: Delta-sigma DACs.Chapter 8: High-level design and simulation.Chapter 9: Example modulator systems.Appendix A: Spectral estimation.Appendix B: The delta-sigma toolbox.Appendix C: Noise in switched-capacitor delta-sigma data converters.read more
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Book ChapterDOI
Characterization and Specification
TL;DR: This chapter discusses the fundamentals of the characterization and measurement techniques, such as histogram testing, that serve to establish a numerical value for a theoretical concept.
Patent
DESIGN METHOD FOR BANDPASS DeltaSigma MODULATOR, BANDPASS DeltaSigma MODULATOR, DEVICE HAVING BANDPASS DeltaSigma MODULATOR, AND METHOD USING BANDPASS DeltaSigma MODULATION
Maehata Takashi,Totani Kazuyuki +1 more
TL;DR: In this article, a bandpass DeltaSigma modulator is obtained by replacing z in the z region model of a low-pass DSA with z' below (in no event does theta0 = ±pi/2×n, where n is an integer equal to 1 or greater).
Bipolar Waveform Synthesis With an Optically Driven Josephson Arbitrary Waveform Synthesizer
Justus A. Brevik,Dahye Lee,Anna E. Fox,Akim A. Babenko,Joe C. Campbell,G. Dresselhaus,Frank Quinn,Samuel Bein +7 more
TL;DR: In this article , an array of Josephson junctions was driven with photonically generated current pulses to synthesize a high-fidelity 1 kHz bipolar voltage waveform with a quantum-based amplitude that can be directly related to fundamental constants.
Dissertation
Power and spectrally efficient integrated high-speed LED drivers for visible light communication
TL;DR: The first integrated digital to light converter 3 Power and Spectrally Efficient Integrated High-Speed LED drivers for VLC (DLC), where depending on the input code, a proportional number of LEDs are turned ON, realising a data converter in the optical domain is also an output from this research.
References
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Journal ArticleDOI
A higher order topology for interpolative modulators for oversampling A/D converters
TL;DR: Higher order modulators are shown not only to greatly reduce oversampling requirements for high-resolution conversion applications, but also to randomize the quantization noise, avoiding the need for dithering.
Journal ArticleDOI
Decimation for Sigma Delta Modulation
TL;DR: It is shown that digital filters comprising cascades of integrate-and-dump functions can match the structure of the noise from sigma delta modulation to provide decimation with negligible loss of signal-to-noise ratio.
Journal ArticleDOI
An analysis of nonlinear behavior in delta - sigma modulators
Sasan H. Ardalan,J.J. Paulos +1 more
TL;DR: This paper introduces a new method of analysis for deltasigma modulators based on modeling the nonlinear quantizer with a linearized gain, obtained by minimizing a mean-square-error criterion, followed by an additive noise source representing distortion components.
Book ChapterDOI
The Structure of Quantization Noise from Sigma-Delta Modulation
James C. Candy,O. Benjamin +1 more
TL;DR: Simple algebraic expressions for this modulation noise and its spectrum in terms of the input amplitude are derived and can be useful for designing oversampled analog to digital converters that use sigma-delta modulation for the primary conversion.
Journal ArticleDOI
A fourth-order bandpass sigma-delta modulator
TL;DR: The modulator of a bandpass analog/digital (A/D) converter, with 63 dB signal/noise for broadcast AM bandwidth signals centered at 455 kHz, has been implemented by modifying a commercial digital-audio sigma-delta ( Sigma Delta ) converter.