Delta modulation
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Back to Top2013 9th International Conference on Information, Communications & Signal Processing (ICICS)
The conference provides an opportunity for researchers around the world to exchange ideas and latest research results in areas such as multimedia systems, information systems, signal processing, communications, networking and related fields.
2008 IEEE Power Electronics Specialists Conference  PESC 2008
Periodicals related to Delta modulation
Back to TopConsumer Electronics, IEEE Transactions on
The design and manufacture of consumer electronics products, components, and related activities, particularly those used for entertainment, leisure, and educational purposes
Display Technology, Journal of
This publication covers the theory, design, fabrication, manufacturing and application of information displays and aspects of display technology that emphasize the progress in device engineering, device design, materials, electronics, physics and reliabilityaspects of displays and the application of displays.
Electron Devices, IEEE Transactions on
Publishes original and significant contributions relating to the theory, design, performance and reliability of electron devices, including optoelectronics devices, nanoscale devices, solidstate devices, integrated electronic devices, energy sources, power devices, displays, sensors, electromechanical devices, quantum devices and electron tubes.
Industrial Electronics, IEEE Transactions on
Theory and applications of industrial electronics and control instrumentation science and engineering, including microprocessor control systems, highpower controls, process control, programmable controllers, numerical and program control systems, flow meters, and identification systems.
Industry Applications, IEEE Transactions on
The development and application of electric systems, apparatus, devices, and controls to the processes and equipment of industry and commerce; the promotion of safe, reliable, and economic installations; the encouragement of energy conservation; the creation of voluntary engineering standards and recommended practices.
Xplore Articles related to Delta modulation
Back to TopClass D series resonant converter controlled with FPGAbased deltasigma modulator
Hirotaka Koizumi 2009 International Conference on Power Electronics and Drive Systems (PEDS), 2009
A 1st order 1bit deltasigma modulator to control a Class D series resonant converter is built with an FPGA. The target reference and the feedback gain are freely chosen. A Class D series resonant converter designed at an operating frequency of 200 [kHz] was built and driven by the FPGAbased delta sigma modulator. Maintaining zerocurrent switching (ZCS) operation, the output ...
Modal control using a deformable mirror for adaptive optics
P. J. Hampton; C. Bradley; P. Agathoklis PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005., 2005
This paper presents the control of a deformable mirror for an adaptive optics system that is implemented at the University of Victoria. A discussion of sample point lay out to detect a 2D polynomial is provided. This includes the generating functions for this polynomial and a coherent representation as a matrix of functions. The controlled system and sensor are both ...
Input DM EMI filter design of interleaved CRM Boost PFC converter with coupled inductor
Fei Yang; Xinbo Ruan; Qing Ji; Zhihong Ye 2011 IEEE Energy Conversion Congress and Exposition, 2011
The interleaved Boost power factor correction (PFC) converter operating in critical current mode (CRM) features high input power factor, high efficiency and small magnetic components. If the inductors are coupled, the turns number can be reduced, but the input current ripple is increased. This paper discusses the twophase interleaved CRM Boost converter with an inversely coupled inductor. The coupling effect ...
A. V. Rylyakov; J. A. Tierno; D. Z. Turker; J. O. Plouchart; H. A. Ainspan; D. Friedman 2008 IEEE International SolidState Circuits Conference  Digest of Technical Papers, 2008
We report two DPLLs fabricated in a standard 65 nm bulk CMOS process. One PLL, targeting 1to2 GHz clock generation for the ASIC consumer market, is realized using a 5stage static CMOSring digitallycontrolled oscillator (ringDCO). The second PLL, an exploratory design for 20to30 GHz applications, is realized using an LCtank DCO. Both PLLs use the same proportionalintegral (PI) loop filter, ...
A 1V second order delta sigma ADC in 130nm CMOS
K. Lokesh Krishna; T. Ramashri; D. Reena International Conference on Information Communication and Embedded Systems (ICICES2014), 2014
SigmaDelta modulators are commonly used in applications that require high resolution. In this paper a IV second order sigma delta ADC is presented. In this paper over sampling concept is used to address the problem of power dissipation and noise in ADCs. A second order sigma delta modulator is implemented using CMOS 130nm technology. Oversampling ratio is 128 and total ...
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Educational Resources on Delta modulation
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Class D series resonant converter controlled with FPGAbased deltasigma modulator
Hirotaka Koizumi 2009 International Conference on Power Electronics and Drive Systems (PEDS), 2009
A 1st order 1bit deltasigma modulator to control a Class D series resonant converter is built with an FPGA. The target reference and the feedback gain are freely chosen. A Class D series resonant converter designed at an operating frequency of 200 [kHz] was built and driven by the FPGAbased delta sigma modulator. Maintaining zerocurrent switching (ZCS) operation, the output ...
Modal control using a deformable mirror for adaptive optics
P. J. Hampton; C. Bradley; P. Agathoklis PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005., 2005
This paper presents the control of a deformable mirror for an adaptive optics system that is implemented at the University of Victoria. A discussion of sample point lay out to detect a 2D polynomial is provided. This includes the generating functions for this polynomial and a coherent representation as a matrix of functions. The controlled system and sensor are both ...
Input DM EMI filter design of interleaved CRM Boost PFC converter with coupled inductor
Fei Yang; Xinbo Ruan; Qing Ji; Zhihong Ye 2011 IEEE Energy Conversion Congress and Exposition, 2011
The interleaved Boost power factor correction (PFC) converter operating in critical current mode (CRM) features high input power factor, high efficiency and small magnetic components. If the inductors are coupled, the turns number can be reduced, but the input current ripple is increased. This paper discusses the twophase interleaved CRM Boost converter with an inversely coupled inductor. The coupling effect ...
A. V. Rylyakov; J. A. Tierno; D. Z. Turker; J. O. Plouchart; H. A. Ainspan; D. Friedman 2008 IEEE International SolidState Circuits Conference  Digest of Technical Papers, 2008
We report two DPLLs fabricated in a standard 65 nm bulk CMOS process. One PLL, targeting 1to2 GHz clock generation for the ASIC consumer market, is realized using a 5stage static CMOSring digitallycontrolled oscillator (ringDCO). The second PLL, an exploratory design for 20to30 GHz applications, is realized using an LCtank DCO. Both PLLs use the same proportionalintegral (PI) loop filter, ...
A 1V second order delta sigma ADC in 130nm CMOS
K. Lokesh Krishna; T. Ramashri; D. Reena International Conference on Information Communication and Embedded Systems (ICICES2014), 2014
SigmaDelta modulators are commonly used in applications that require high resolution. In this paper a IV second order sigma delta ADC is presented. In this paper over sampling concept is used to address the problem of power dissipation and noise in ADCs. A second order sigma delta modulator is implemented using CMOS 130nm technology. Oversampling ratio is 128 and total ...
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IEEEUSA EBooks

A SecondOrder HighResolution Incremental A/D Converter with Offset and Charge Injection Compensation
Sigmadelta modulation, associated with oversampling and noise shaping, is a wellknown technique used in highaccuracy A/D converters. Such converters, required in telecommunications applications, are characterized by ac perfonnance such as signaltonoise ratio. Moreover, they are mainly dedicated to applications which can tolerate offset and gain errors. On the other hand, measurement and instrumentation applications require absolute accuracy, e.g., offset and gain errors cannot be tolerated. These applications are characterized by dc perfonnance such as differential and integral nonlinearides, offset and gain errors, and they often require high resolution. The secondorder incremental A/D converter, which makes use of sigmadelta modulation associated with a simple digital filter, is capable of achieving such requirements. Experimental results, obtained of circuits fabricated in a SACMOS 3Â¿m technology, indicate that 15bit absolute accuracy is easily achievable, even with a low reference voltage.

An Approach to the Implementation of Digital Filters
An approach to the implementation of digital filters is presented that employs a small set of relatively simple digital circuits in a highly regular and modular configuration, well suited to LSI construction. Using parallel processing and serial, two'scomplement arithmetic, the required arithmetic circuits (adders and multipliers ) are quite simple, as are the remaining circuits, which consist of shift registers for delay and small readonly memories for coefficient storage. The arithmetic circuits are readily multiplexed to process multiple data inputs or to effect multiple, but different, filters (or both), thus providing for efficient hardware utilization. Up to 100 filter sections can be multiplexed in audiofrequency applications using presently available digital circuits in the mediumspeed range. The filters are also easily modified to realize a wide range of filter forms, transfer functions, multiplexing schemes, and roundoff noise levels by changing only the contents of the readonly memory and/or the timing signals and the length of the shiftregister delays. A simple analogtodigital converter, which uses delta modulation as an intermediate encoding process is also presented for audiofrequency applications.

Multirate Filter Designs Using Comb Filters
Decimation is an important component of oversampled analogtodlgital conversion. It transforms the digitally modulated signal from short words occurring at high sampling rate to longer words at the Nyquist rate. Here we are concerned with the initial stage of decimation, where the word rate decreases to about four times the Nyquist rate. We show that digital filters comprising cascades of integrateanddump functions can match the structure of the noise from sigma delta modulation to provide decimation with negligible loss of signaltonoise ratio. Explicit formulas evaluate particular tradeoffs between modulation rate, signaltonoise ratio, length of digital words, and complexity of the modulating and decimating functions.

Fully Controlled ThreePhase Bridge Converters
This chapter discusses the operation of a three‐phase fully controlled bridge converter. It is shown that by suitable control, this device can be used to achieve either a three‐phase controllable voltage source or a three‐phase controllable current source. The chapter presents a refinement of six‐step operation. In particular, one of several pulse‐width modulation (PWM) control strategies that allows the amplitude of the fundamental component of the voltage to be readily controlled is discussed. Six‐step modulation, extended sine‐triangle modulation, and space‐vector modulation are all voltage‐source modulation schemes. The chapter explains usage of these schemes to develop an open‐loop voltage‐regulated converter. Hysteresis modulation and delta modulation are both current source‐based schemes. These are used as the basis of developing an open‐loop current‐regulated converter. Finally, the chapter focuses on closed‐loop methods of regulating q‐ and d‐axis voltages and currents.

Oversampled SigmaDelta Modulation
Oversampled sigmadelta modulation has been proposed as a practical implementation for high rate analogtodigital conversion because of its simplicity and its robustness against circuit imperfections. To date, mathematical developments of the basic properties of such systems have been based either on simplified continuoustime approximate models or on linearized discretetime models where the quantizer is replaced by an additive white uniform noise source. In this paper. we rigorously derive several basic properties of a simple discretetime single integrator loop sigmadelta modulator with an accumulateanddump demodulator. The derivation does not require any assumptions on the correlation or distribution of the quantizer error, and hence involves no linearization of the nonlinear system, but it does show that when the input is constant, the state sequence of the integrator in the encoder loop can be modeled exactly as a linear system in an appropriate space. Two basic properties are developed: 1) the behavior of the sigmadelta quantizer when driven by a constant input and its relation to uniform quantization, and 2) the ratedistortion tradeoffs between the oversampling ratio and the average meansquared quantization error.

Fully Controlled 3Phase Bridge Converters
This chapter contains sections titled: Introduction The 3Phase Bridge Converter 180Â° Voltage Source Operation PulseWidth Modulation SineTriangle Modulation ThirdHarmonic Injection SpaceVector Modulation Hysteresis Modulation Delta Modulation OpenLoop Voltage and Current Control ClosedLoop Voltage and Current Controls References Problems

This chapter contains sections titled: A SelfCalibrating 15 Bit CMOS A/D Converter A RatioIndependent Algorithmic AnalogtoDigital Conversion Technique A PerChannel A/D Converter Having 15Segment Âµ255 Companding A Use of Double Integration in Sigma Delta Modulation MOS ADCFilter Combination That Does Not Require Precision Analog Components A Voiceband 15b Interpolative Converter Chip Set A 12bit SigmaDelta AnalogtoDigital Converter with a 15MHz Clock Rate An 8bit HighSpeed CMOS A/D Converter An 8MHz CMOS Subranging 8Bit A/D Converter A Pipelined 5Msample/s 9bit AnalogtoDigital Converter

Multistage SigmaDelta Modulation
We provide a theoretical basis for multistage sigmadelta modulation (MSM), which is a cascade realization of several singleloop sigmadelta modulators with a linear combinatorial network. Equations are derived describing the output and the quantization noise of MSM for an arbitrary input signal and the noise shaping characteristic of MSM is investigated. The spectral characteristics of an _m_stage sigmadelta modulator with both dc and sinusoidal inputs are developed. For both types of inputs the binary quantizer noise of the _m_th (_m_ Â¿ 3) sigmadelta quantizer, which appears at the output as an _m_th order difference, is asymptotically white, uniformly distributed, and uncorrelated with the input level. It is also found that for an _m_stage sigmadelta quantizer with either an ideal lowpass filter or a sinc _m_ + 1 filter decoder, the average quantization noise of the system is inversely proportional to the (2_m_, + 1)th power of the oversampling ratio _R_. This implies that highorder systems are favorable in terms of the trade off between the quantization noise and the oversampling ratio. Simulation results are presented to support the theoretical analysis.

Constraints Analysis for Oversampling AtoD Converter Structures on VLSl Implementation
Requirements, applied to analog components and characteristics for oversampling AtoD converter structures with second order loop transfer function, were analyzed through numerical and mathematical analyses. The results suggest that a first order predictive encoder, with first order noise shaping, is best suited to high resolution future VLSl implementation. It is most difficult to achieve a theoretical second order Â¿Â¿ modulation signal tonoise ratio, because of the amplifier performance requirements. The operational amplifier gain should only be greater than kR/n, as long as the amplifier response is linear, where R is the oversampling ratio, Â¿ is the angular stop band frequency and k is a. parameter depending on structures and integrator circuit configuration, if a switched capacitor integrator is employed in a noise shaping technology. A second order delta modulation coder does not seem to be applicable to a precision converter, but to a high speed converter instead.

Uniform qunntizers play a fundamental role in digital communication systems and have been the subject of extensive study for many decades, The inherent nonlinearity of quantizers makes their analysis hoth difficult and Interesting, It usually has been accomplished either by assuming the quantizer noise to be a signalindependent, uniform white random process or by replacing the quantizer by a deterministic linear device, or by combining the two assumptions. Such linearizing approximations simplify the analysis and permit the use of linear systems techniques, but few results exist quantifying how good such approximations are for specific systems, These complications are magnified when the quantizer is inside a feedback loop, as for SigmaDelta modulators. Exact descriptions of the moments and spectra of quantizer noise have been developed recently for the special case of singleloop, multistage and multiloop SignulDelta modulators. These results demonstrate. that the white noise and linearization assumptions can be quite poor approximations in some systems and quite good in others. It turns out that many of the techniques used in the analysis were first applied to the analysis of quantizers by Clavier, Panter, and Grieg (1947) in pioneering (but often overlooked) work that preceded Bennett's (1948) classic study of quantization noise spectra. We take advantage of the benefit of hindsight to develop several results describing the behavior of quantization noise in a unified and simplified manner. Exact formulas for quantizer noise spectra are developed and applied to a variety of systems and inputs, including scalar quantization (PCM), dithered PCM, SigmaDelta modulation, dithered SigmaDelta modulation, twostage SigmaDelta modulation, and secondorder SigmaDelta modulation.
Standards related to Delta modulation
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