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Filtering by: Creator Yang, Kei-wean Calvin Remove constraint Creator: Yang, Kei-wean Calvin Contributor advisor sim Moon, Un-Ku Remove constraint Contributor advisor sim: Moon, Un-Ku

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  • Single-Ended Techniques for Delta-Sigma Modulators

    Creator:
    Lee, Calvin Y.
    Abstract:
    This work presents a high-resolution Delta-Sigma ADC which combines the use of the pseudo-pseudo-differential noise filtering technique with single-ended ring amplifier based integrators. The pseudo-pseudo-differential noise filtering technique utilizes single-ended circuits while maintaining the even-order rejection found in fully-differential structures which alleviates, in the active analog blocks, the need for...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Calvin Yoji Lee for the

  • Power-Efficient Design Techniques and Architectures for Scalable Submicron Analog Circuits

    Creator:
    Xu, Yang
    Abstract:
    As the CMOS process scales down to submicron, digital circuit performance improves, while reduced supply voltage and lower transistor intrinsic gain make it difficult to implement analog circuits in a power efficient manner. Therefore, it has become advantageous to shift more analog signal processing functions conventionally realized in voltage (analog)...
    Resource Type:
    Dissertation
    Full Text:
    Yang Xu for the degree of Doctor of Philosophy in Electrical and Computer Engineering presented on

  • A 1V 40mA Fast Transient Capless LDO with 7uA Quiescent Current in 180nm CMOS using Ring Amplifier with Adaptive Damping

    Creator:
    Xiao, Bohui
    Abstract:
    Ring amplification has emerged as an efficient technique to drive large capacitive loads in switched capacitor circuits. We propose circuit techniques to demonstrate the first application of a ring amplifier in a non-capacitive feedback system of a LDO. These techniques enable a simple cap-less LDO structure in 180nm CMOS that...
    Resource Type:
    Masters Thesis
    Full Text:
    Sun, Yang Xu, Ahmed El-Shater, Calvin Lee, Michael Oatman, and Hang Hu. I wish them the best in the

  • A Wide Modulation Range and PVT-Tolerant Spread-Spectrum Modulation Clock Generator

    Creator:
    Sun, Hyuk
    Abstract:
    This dissertation presents a phase domain in-loop-bandwidth spread-spectrum clock generation technique. In this proposed technique, a charge-based discrete-time loop filter is proposed to enable the phase domain in-loop-bandwidth spread-spectrum modulation without a delta-sigma modulator or time-to-digital converter. The in-loop-bandwidth modulation technique maximizes the loop bandwidth to improve phase noise suppression...
    Resource Type:
    Dissertation
    Full Text:
    group members Allen Waters, Jason Muhlestein, Spencer Leuenberger, Yang Xu, Praveen Kumar Venkatachala

  • Ring Amplifier Optimized for High Resolution Analog-to-Digital Converter Applications

    Creator:
    ElShater, Ahmed O.
    Abstract:
    In recent years, SAR ADCs have been shown to acheive faster conversion times and improved power efficiencies due to their simple building blocks that are digital in nature and scale favorably with technology. High resolution ADCs with stringent noise requirement has led to the adoption of hybrid ADC architectures such...
    Resource Type:
    Dissertation
    Full Text:
    technical discussions across various phases of my research. Jason, Spencer, Praveen, Calvin, Tim, Yang and

  • Next generation analog-to-digital conversion using time-based encoding and digital synthesis techniques

    Creator:
    Muhlestein, Jason, Russell
    Abstract:
    The internet-of-things is a growing market segment which is based on an arrayof portable communication devices with high power efficiency. Advanced semiconductortechnology can easily improve their digital performance, but the samecannot be said for the analog blocks which are vital to their operation. Highperformance analog circuits continue to use conventional...
    Resource Type:
    Dissertation
    Full Text:
    Coker, Yang Xu, Hyuk Sun, Praveen Venkatachala, Ahmed El-Shater and Allen Waters. I am also extremely

  • Ring Amplifier Design Techniques for High-Precision and High-Speed Amplification

    Creator:
    Leuenberger, Spencer
    Abstract:
    Demands of today's integrated society dependent on communication systems have driven the creation of ever more efficient analog-to-digital converters. For the same reasons, digital circuitry has rapidly expanded to serve all the different systems and needs of consumers. The trend of technology development has been to make these digital circuits...
    Resource Type:
    Dissertation
    Full Text:
    , Tae- whan, Allen, Simon, Jason, Yang, Farshad, Brandi, Jerry, and Tim, thanks for all the support