Results 21 to 30 of about 130,433 (340)
Multiband sigma-delta modulation
Electronics Letters, 1993 A sigma-delta modulation architecture which breaks the signal band into smaller bands and uses a different band reject noise shaping transfer function per band is described. Operating at 1.024 MHz and 64 kHz signal bandwidth with 2nd order modulators, the resolution of the architecture is 4.5 bits higher than that of a standard 2nd order sigma delta ...
P. Aziz, H. Sorensen, J. van der Spiegel
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New pulse modulator with low switching frequency
Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2014 The author presents an integrating pulse modulator (analogue signal converter) with the pulse frequency and duration modulation similar to sigma-delta modulation (with low switching frequency), without quantization.
V. S. Golub
doaj +1 more source
Colored-Gaussian Multiple Descriptions: Spectral and Time-Domain Forms [PDF]
, 2016 It is well known that Shannon's rate-distortion function (RDF) in the colored quadratic Gaussian (QG) case can be parametrized via a single Lagrangian variable (the "water level" in the reverse water filling solution).
Kochman, Yuval +2 more
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Bandpass sigma-delta modulation
Electronics Letters, 1989 A bandpass version of sigma-delta modulation is presented, with simulation results for second- and fourth-order convertors. For the fourth-order convertor operating at 8 MHz, simulations demonstrate a resolution of 16 bits over an 8 kHz band centred at 1 MHz.
R. Schreier, M. Snelgrove
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Digital calibration technique based AC injection for continuous‐time sigma‐delta converters
Electronics Letters, 2023 In this study, a digital calibration method applicable for a continuous‐time sigma‐delta analogue‐to‐digital converter is proposed using the AC injection technique.
Shengling Zhu, Lei Chen, Jie Su
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Calibration of DAC mismatch errors in sigma delta ADCs based on a sine-wave measurement [PDF]
, 2013 We present an offline calibration procedure to correct the nonlinearity due element mismatch in the digital-to-analog converter (DAC) of a multibit Sigma Delta-modulation A/D converter.
De Bock, Maarten +4 more
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IEEE Transactions on Nuclear Science, 2019 We investigated a simple and effective method to extend 1-bit sigma-delta modulation (SDM) circuit-based charge-to-digital converter (QDC) to read dual-polarity silicon photomultiplier (SiPM) output signals.
Xinyi Cheng, K. Hu, Y. Shao
semanticscholar +1 more source
A describing function study of saturated quantization and its application to the stability analysis of multi-bit sigma delta modulators [PDF]
, 2013 Just as their single-bit counterparts, multi-bit sigma delta modulators exhibit nonlinear behavior due to the presence of the quantizer in the loop. In the multi-bit case this is caused by the fact that any quantizer has a limited output range and hence ...
De Bock, Maarten +3 more
core +1 more source
Performance Scrutiny of Two Control Schemes Based on DSM and HB in Active Power Filter [PDF]
Journal of Operation and Automation in Power Engineering, 2014 This paper presents a comparative analysis between two current control strategies, constant source power and generalized Fryze current, used in Active Power Filter (APF) applications having three different modulation methods. The Hysteresis Band (HB) and
R. Kazemzadeh +3 more
doaj
A ΣΔ Closed-Loop Interface for a MEMS Accelerometer with Digital Built-In Self-Test Function
Micromachines, 2018 Sigma-delta (ΣΔ) closed-loop operation is the best candidate for realizing the interface circuit of MEMS accelerometers. However, stability and reliability problems are still the main obstacles hindering its further development for high-end ...
Dongliang Chen +5 more
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