Open AccessBook
Understanding Delta-Sigma Data Converters
Reads0
Chats0
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
More filters
Journal ArticleDOI
EPWM-OFDM Signal Transmission against Nonlinearities of E/O Converters in Radio over Fiber Channel
Book ChapterDOI
RF Power Amplifier and Linearization Techniques
TL;DR: The radio frequency (RF) power amplifier (PA) is one of the most critical components in designing transmitters in wireless communication systems, and its efficiency dominates the overall efficiency of the transmitter.
Journal ArticleDOI
Improved Chopping in Continuous-Time Delta–Sigma Converters Using FIR Feedback and ${N}$ -Path Techniques
TL;DR: This brief combines chopping and FIR feedback with -path techniques, enabling a much lower chopping frequency than would otherwise be possible with a given number of FIR DAC taps.
Proceedings ArticleDOI
A 0.2-to-2MHz BW, 50-to-86dB SNDR, 16-to-22mW flexible 4 th -order ΣΔ modulator with DC-to-44MHz tunable center frequency in 1.2-V 90-nm CMOS
TL;DR: This paper describes the design of a switched-capacitor fourth-order single-loop ΣΔ modulator with a 5-level embedded quantizer, which can be reconfigured either as a lowpass or as a bandpass analog-to-digital converter with a tunable notch frequency and an optimized loop-filter zero placement.
Proceedings ArticleDOI
Delta Sigma Modulation based All Digital Transmitter for Upcoming SDR applications
Nishant Kumar,Karun Rawat +1 more
TL;DR: The proposed all digital transmitter architecture is verified in simulation and hardware using 20 MHz long term evolution (LTE) signal with 11 dB peak to average power ratio (PAPR) and measurement results show the good performance of transmitter using digital upconversion technique.
References
More filters
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.