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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
Citations
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Journal ArticleDOI
DISCO: a graphical methodology for the design of Sigma-Delta modulators
TL;DR: A MATLABTM toolbox for the design and simulation of continuous time (CT) and discrete time Sigma-Delta modulators is presented and several typical non-idealities of CT Sigma- Delta modulators are simulated with a tremendously speed up via the application of the lifting approach.
Journal ArticleDOI
Envelope Tracked Pulse Gate Modulated GaN HEMT Power Amplifier for Wireless Transmitters
TL;DR: The proposed transmitter architecture is developed using two high power 10 W gate modulated PAs combined in a fashion to operate as a switched voltage source for the range of duty cycles of pulses driving the gates of power amplifiers.
Proceedings ArticleDOI
Potential Architecture for Future Generation `Green' Wireless Base Station
TL;DR: A novel approach which reduces bandwidth expansion on the envelope by 54% is proposed and a modulator is used to convert amplitude and phase information into the edges of a pulse train.
Journal ArticleDOI
A continuous time delta-sigma modulator with reduced clock jitter sensitivity through DSCR feedback
TL;DR: The architecture has the additional benefit of reducing the typically high switched-capacitor-resistor DAC output peak currents, resulting in reduced slew-rate requirements for the loop-filter integrators.
Proceedings ArticleDOI
High Order Bandpass Sigma Delta Interface for Vibratory Gyroscopes
TL;DR: Some high order SigmaDelta loop topologies have favorable noise shaping characteristics for electronic noise originating from the pickoff circuit and signal anti-aliasing and the requirements for the electronic circuits can be considerably relaxed.
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.