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Delta-Sigma Modulator based multiplier

K. Diwakar, C. Senthilpari, Lim Way Soong, Ajay Kumar Singh
2009 IEICE Electronics Express  
Out of the two signals, one signal is fed to the input of typical second order, ΔΣ Modulator (DSM).  ...  The dynamic range of input signals and the accuracy of proposed multiplier are better than the conventional CMOS multipliers.  ...  Simulation The software, MATLAB is used to simulate the proposed DSM based multiplier.  ... 
doi:10.1587/elex.6.322 fatcat:bpqpymfhrfeg5kwm67ezaiqrby

A multiplier-free digital sinusoid generator based on sigma-delta modulation

C.M. Zierhofer
1996 IEEE transactions on circuits and systems - 2, Analog and digital signal processing  
In this paper sigma-delta (%A) sequences derived from a single-loop numeric E-A modulator with sinusoidal input are investigated.  ...  If constant F i s an integer, the operation of the oscillator is exclusively based aln integers.  ...  However, the multibit-multiplier is replaced by a sigma-delta ( E A ) modulator, which is incorporated between the integrators.  ... 
doi:10.1109/82.494389 fatcat:uwlds2v52vco5ek7rjalu56bay

Largely-Reduced Switching Noise Buck Type DC/DC Converter Embedding A Novel Delta-Sigma Modulation Control Scheme with White Noise Sequence
ホワイトノイズ乗算器を持つ新ΔΣ変調制御方式低スイッチングノイズ非絶縁降圧形DC-DC コンバータ

Atsushi Hirota, Saad Mekhilef, Mutsuo Nakaoka
2016 Journal of the Japan Institute of Power Electronics  
The novel type delta-sigma modulator which consists of the prototype delta-sigma modulator and white noise-based multiplier is demonstrated specifically for this DC/DC converter.  ...  キーワード:非絶縁降圧形 DC-DC コンバータ,プロトタイプΔ∑変調器,ホワイトノイズベース乗算器,新Δ∑変調器,PWM 制 御,スイッチングノイズピーク成分抑制,出力電圧制御 Keywords:non-isolated step-down (buck) DC/DC converter, prototype delta-sigma modulator, white noise-based multiplier  ...  delta-sigma modulator; (d) PWM.  ... 
doi:10.5416/jipe.42.80 fatcat:3nsiwy65qfhw7ae7aczdwmznxi

Hardware-Efficient Delta Sigma-Based Digital Signal Processing Circuits for the Internet-of-Things

Yifei Liu, Paul Furth, Wei Tang
2015 Journal of Low Power Electronics and Applications  
The counter-based average adder can work with both first-order and higher-order Delta Sigma modulators and can also be used as a coefficient multiplier.  ...  Based on these methods, we develop Delta Sigma domain on-the-fly digital signal-processing circuits: the Delta Sigma sum adder, average adder and coefficient multiplier.  ...  Based on the digital Delta Sigma modulator method and the proposed P-N (positive-negative) pair method with a signed binary counter, we design the Delta Sigma sum adder, average adder and coefficient multiplier  ... 
doi:10.3390/jlpea5040234 fatcat:jzwp4yrkbvcj7faehcvhobmiwa

Arbitrary-precision signal generation for mixed-signal built-in-self-test

X. Haurie, G.W. Roberts
1998 IEEE transactions on circuits and systems - 2, Analog and digital signal processing  
MULTIPLIERLESS HIGH-ORDER DELTA-SIGMA MODULATOR The delta-sigma modulators used in this work are multiplier-free 1-bit high-order digital delta-sigma modulators specifically tailored for use in delta-sigma  ...  CONCLUSION High-order delta-sigma modulation-based analog signal generation has been shown to be feasible, both with respect to issues of stability and of hardware cost.  ... 
doi:10.1109/82.735354 fatcat:75v5df73evgrtj6uxycjpgvuja

Sigma-Delta Modulation Based Digital Filter Design Techniques in FPGA

Tayab Memon, Paul Beckett, Amin Z. Sadik
2012 ISRN Electronics  
In this paper efficient digital filter design techniques categorized as sigma-delta modulation based short word length (SWL) and multibit (or contemporary) techniques are reviewed in terms of hardware  ...  A small number of basic arithmetic circuits designed using sigma-delta modulation encoding and synthesized by using FPGAs are also described.  ...  More recently sigma-delta modulation based bit-stream adder and multiplier modules have been described in [29, 30] .  ... 
doi:10.5402/2012/538597 fatcat:lk6lven3s5bubcqt2oylsfri6i

Adaptive sigma-delta modulation with one-bit quantization

C.M. Zierhofer
2000 IEEE transactions on circuits and systems - 2, Analog and digital signal processing  
The approach is basically suited for a wide class of sigma-delta modulators.  ...  A method for improving the signal-to-noise ratio (SNR) of sigma-delta modulators with one-bit quantization is presented.  ...  Thus, this noise (multiplied by ) is directly added to the input signal and enhances the noise energy in the base band.  ... 
doi:10.1109/82.842109 fatcat:xnlzwaxtqrar3muqmgvzg6ep2q

Reduced switching noise Dc-Dc converter applied improve switch control modulation method

Atsushi Hirota, Bin Guo, Saad Mekhilef, Mutsuo Nakaoka
2014 2014 9th IEEE Conference on Industrial Electronics and Applications  
This paper proposes a dc-dc converter introduces improved delta sigma modulation circuit, and examine the switching noise compo nent.  ...  When deIta-sigma modulation technique is used for power converter, this problem does not occur. Still the same problem arises in the case of dc-dc converter.  ...  DELTA-SIGMA MODULATION CIRCUITIn this paper a new method based on delta-sigma modulation circuit, andFig. 1 represents the block diagram of delta-sigma modulation circuit.  ... 
doi:10.1109/iciea.2014.6931367 fatcat:wyl7ugoewfejtgnmxe7dtp7gja

Stability and performance analysis of an adaptive sigma-delta modulator

M.A. Aldajani, A.H. Sayed
2001 IEEE transactions on circuits and systems - 2, Analog and digital signal processing  
This work develops an adaptive sigma-delta modulator that is based on adapting the quantizer step-size using estimates of the quantizer input rather than the modulator input.  ...  The adaptive modulator with a first-order noise shaping filter is shown to be bounded-input bounded-output stable.  ...  Adaptive Sigma-Delta Modulation Adaptive sigma-delta modulation (ASDM) attempts to increase the dynamic range of sigma-delta modulators while keeping the quantization noise as low as possible.  ... 
doi:10.1109/82.924066 fatcat:3zickg37izbc5pz2bexpbruybe

Sigma-delta receive beamformer based on cascaded reconstruction for ultrasound imaging application

Jia Hao Cheong, Y.Y.H. Lam, Kei Tee Tiew, Liang Mong Koh
2008 IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control  
A higher order sigma-delta modulator provides better bit resolution, but a 2nd-order sigma-delta modulator was used because any single bit sigma-delta modulator higher than 2nd order is not inherently  ...  Fig. 6 . 6 Cascaded reconstruction of a sigma-delta modulated bit stream. Fig. 7 . 7 Block diagram of an SDBF based on cascaded reconstruction.  ...  He was with GEC Traction Pte Ltd (UK) from 1978 to 1980 as an engineer working on microprocessor-based automatic test systems.  ... 
doi:10.1109/tuffc.885 pmid:18986890 fatcat:p2e64dewdrhshdmpxombr6ooie

Sigma-Delta Receive Beamformer Based on Cascaded Reconstruction for Ultrasound Imaging Application

Jia Hao Cheong, Yvonne Ying Hung Lam, Liang Mong Koh, Kei Tee Tiew
2009 2009 3rd International Conference on Bioinformatics and Biomedical Engineering  
A higher order sigma-delta modulator provides better bit resolution, but a 2nd-order sigma-delta modulator was used because any single bit sigma-delta modulator higher than 2nd order is not inherently  ...  Fig. 6 . 6 Cascaded reconstruction of a sigma-delta modulated bit stream. Fig. 7 . 7 Block diagram of an SDBF based on cascaded reconstruction.  ...  He was with GEC Traction Pte Ltd (UK) from 1978 to 1980 as an engineer working on microprocessor-based automatic test systems.  ... 
doi:10.1109/icbbe.2009.5163384 fatcat:7kjh5bfdhvdiba3sudzfegqkmi

FPGA signal processing using sigma-delta modulation

C. Dick, F. Harris
2000 IEEE Signal Processing Magazine  
The Σ∆ data re-quantizer is based on a single loop error feedback sigma-delta modulator [l] shown in Figure 9 .  ...  loop sigma-delta modulator noise transfer function.  ... 
doi:10.1109/79.814644 fatcat:lrpqlcfls5aobemocwpckgyovq

Sigma-Delta Modulator Design and Analysis for Audio Application
English

Jadhav Archana, Sujeet Mishra
2015 International Journal of Engineering Trends and Technoloy  
In this design continuous time sigma-delta modulator is implemented to reduce the noise problem. This sigma-delta modulator also helps to reduce power consumption of circuit.  ...  Circuit design an 11bit low power sigma-delta modulator for digital audio application is given, using a single bit quantizer.  ...  Sigma-delta Modulators employing only one quantizer are called single-loop topologies, whereas those employing several quantizer are often named cascade or MASH Sigma-delta Modulators. 2.  ... 
doi:10.14445/22315381/ijett-v30p244 fatcat:mcequokudrd5tpfsx3qxmifr6i

New 2 2 Sigma Delta Modulators for Different Applications

Slim Tahri, SETIT, Institute of Biotechnology of Sfax, University of Sfax Tunisia., Nizar Khitouni, Med Salim Bouhlel, SETIT, Institute of Biotechnology of Sfax, University of Sfax Tunisia., SETIT Institute of Biotechnology of Sfax, University of Sfax Tunisia.
2021 International journal of recent technology and engineering  
This work presents the design of a new 2-2 programmable sigma delta modulator architecture, for different applications, this transformation design of the ΣΔ modulator low-pass, band-pass and high-pass  ...  The simulation result for sigma delta modulator for biomedical applications exhibit a signal to noise ratio is 95 dB @ 250Hz bandwidth and a 75dB @ 200KHz ,85dB @1MHz for pass band modulator.  ...  Figure 5 : 5 Figure 5: Spectrum of pass -Band sigma delta modulator. II.3.  ... 
doi:10.35940/ijrte.d6629.1110421 fatcat:mqwibscofbc33hnfuvlfut3v5i

A continuous time sigma delta modulator with operational floating integrator

Dragos Ducu, Anca Manolescu
2012 CAS 2012 (International Semiconductor Conference)  
This paper presents a new circuit realization for current mode continuous time sigma delta modulator.  ...  In this sigma delta convertor for implementation of integrators in loop filter, operational floating conveyors are employed.  ...  The bit resolution of proposed modulator is 9bit. CONCLUSIONS A new second order continuous time sigma-delta modulator based on operational floating conveyors is presented.  ... 
doi:10.1109/smicnd.2012.6400729 fatcat:axsxfmblcrcxdfvyhbbzie5nwa
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