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Filtering by: Creator Taylor, Kendrick C. Remove constraint Creator: Taylor, Kendrick C. Degree Field Electrical and Computer Engineering Remove constraint Degree Field: Electrical and Computer Engineering Subject Modulators (Electronics) Remove constraint Subject: Modulators (Electronics)

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  • Architectural Solutions for Analog Imperfections in ΔΣ Analog-to-Digital Based Systems

    Creator:
    Zali Asl, Samira
    Abstract:
    For today’s ubiquitous portable devices, innovative integrated circuits with high performance yet very low power are necessary. As these devices are used to communicate and sense real world signals in the environment, analog-to-digital converters (ADC) and systems are the key interface circuits needed to digitize the sensed information and they...
    Resource Type:
    Dissertation
    Full Text:
    frequency varies by -31ppm/C [16]. For a TCXO device, a temperature-to-digital converter (TDC) is needed

  • Lowpass and bandpass current-mode delta-sigma DACs employing mismatch-shaping

    Creator:
    Shui, Tao, 1969-
    Abstract:
    Delta-sigma modulators are currently a very popular technique for making high-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs). These oversampled data converters have several advantages over conventional Nyquist-rate converters, including an insensitivity to many analog component imperfections, a simpler antialiasing filter and reduced accuracy requirements in the sample and hold....
    Resource Type:
    Dissertation
    Full Text:
    & Computer Engineering Chair of Department of E c ical & Computer Engineering Dean of Graduate ool I

  • Delta-sigma modulators employing continuous-time circuits and mismatch-shaped DACs

    Creator:
    Zhang, Bo
    Abstract:
    Delta-sigma modulators are currently a very popular technique for making high-resolution analog-to-digital and digital-to-analog converters. These oversampled data converters have several advantages over conventional Nyquist-rate converters, including an insensitivity to many analog component imperfections, a simpler antialiasing filter and reduced accuracy requirements in the sample and hold. Though the initial...
    Resource Type:
    Dissertation
    Full Text:
    modulators. Without his able guidance this work would not have been possible. Many thanks to Dr. Gabor C

  • A continuous time frequency translating delta Sigma Modulator

    Creator:
    Pulincherry, Anurag
    Abstract:
    This thesis presents a continuous time bandpass delta sigma modulator with frequency translation inside the delta sigma loop. The input IF signal is down converted to baseband after amplification by a low Q, wideband bandpass resonator. The down converted IF signal is digitized by a continuous time, second order lowpass...
    Resource Type:
    Masters Thesis
    Full Text:
    noise floor corresponding to the quantization noise. 9Level ND Output Spectrum C - 20 40 60 80

  • Wide-bandwidth, high-resolution delta-sigma analog-to-digital converters

    Creator:
    Zanbaghi, Ramin
    Abstract:
    There is a significant need in recent mobile communication and wireless broadband systems for high-performance analog-to-digital converters (ADCs) that have wide bandwidth (BW>5-MHz) and high data rate (>100-Mbps). A delta-sigma ADC is recognized as a power-efficient ADC architecture when high resolution (>12-b) is required. This is due to several advantages...
    Resource Type:
    Dissertation
    Full Text:
    ) maximum signal swing of the adder block, after scaling (c) maximum applicable modulator input

  • Switched-current circuits for a bandpass delta-sigma modulator

    Creator:
    Pattamatta, Srinivas V.
    Resource Type:
    Masters Thesis
    Full Text:
    switch of the 'in lout-110. AT Cell A BT CT CO Cell B Cell C AT EF11-"-\ CT Al AO Al X BI X

  • A dual-path 2-0 MASH ADC with dual digital error correction

    Creator:
    Zhang, Zhenyong
    Abstract:
    This dissertation presents a dual-path 2-0 MASH (Multi-stAge-noise -SHaping) ADC with two verified digital corrections of DAC mismatch error and quantization noise leakage. By using these two techniques, the requirements for the analog circuits are greatly relaxed. The dual-path structure generates two outputs, one only composed of conversion errors, the...
    Resource Type:
    Dissertation
    Full Text:
    Dual-Path 2-0 MASH ADC with Dual Digital Error Correction Abstract approved: Gabor C. Temes

  • Time-based noise-shaping techniques for time-to-digital and analog-to-digital converters

    Creator:
    Young, Brian LeRoy
    Abstract:
    In this dissertation, time-based signal processing techniques and their applications in oversampling and noise-shaping data converters are examined. These techniques demonstrate the ability to shift the burden of high performance analog circuits from the compressed voltage-domain to the augmented time-domain. First, the potential of high order noise-shaping and phase-domain feedback...
    Resource Type:
    Dissertation
    Full Text:
    fabricated in 65 nm CMOS. c©Copyright by Brian LeRoy Young June 3, 2013 All Rights Reserved Time