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Filtering by: Creator Lee, Lewina O. Remove constraint Creator: Lee, Lewina O. Advisor Moon, Un Ku Remove constraint Advisor: Moon, Un Ku

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  • 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:
    AN ABSTRACT OF THE DISSERTATION OF Ahmed O. ElShater for the

  • Power-efficient two-step pipelined analog-to-digital conversion

    Creator:
    Lee, Ho-Young
    Abstract:
    Hand-held devices are among the most successful consumer electronics in modern society. Behind these successful devices, lies a key analog design technique that involves high-performance analog-to-digital conversion combined with very low power consumption. This dissertation presents two different approaches to achieving high power efficiency from a two-step pipelined architecture, which...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Ho-Young Lee for the degree of Doctor of Philosophy in

  • 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

  • Active Noise Shaping Analog-to-Digital Data Converters

    Creator:
    Shi, Lukang
    Abstract:
    Successive-approximation-register (SAR) analog-to-digital converters are popular for medium accuracy, medium speed and low power applications, such as in biomedical applications. They have low latency and simple architecture compared with ΔΣ ADCs. This is because of SAR ADCs’ binary searching scheme. Furthermore, SAR ADCs can apply oversampling and noise shaping schemes...
    Resource Type:
    Dissertation
    Full Text:
    Anand and Professor Yun-Shik Lee to be the committees of all my PhD exams. Their valuable comments

  • Automated analysis, design, and optimization of low noise oscillators

    Creator:
    Vytyaz, Igor
    Abstract:
    Low noise oscillators are universally needed in digital systems for clock generation and synchronization, and in radio-frequency communication front-ends for frequency up- and down-conversion. Noise in oscillators results in timing jitter, and limits the clock frequency of digital systems. In radio-frequency communication systems, phase noise in oscillators lowers the signal-to-noise...
    Resource Type:
    Dissertation
    Full Text:
    with David C. Lee on challenging projects at Berkeley Design Automa- tion proved to be a wonderful

  • Oscillators and phase locked loops for space radiation environments

    Creator:
    Vandepas, Martin
    Abstract:
    Circuits operating outside the earth’s atmosphere are more vulnerable to cosmic radiation and require special design consideration. The purpose of this work is to explore methods of mitigating the effect of radiation in phase locked loop (PLL) circuits. Several voltage controlled oscillators (VCOs) and two complete PLLs are designed and...
    Resource Type:
    Masters Thesis
    Full Text:
    ............................................. 18 3.5. Tuning curve for Lee/Kim traditional layout VCO

  • Design techniques for radiation hardened-phase locked loops

    Creator:
    Nemmani, Anantha Nag
    Abstract:
    Spacecrafts experience radiation in the course of their operation and all electronic equipment on board these spacecrafts has to be designed to withstand the effects of this radiation. This thesis describes the effects of total ionization dose (TID) and single event transients (SET) in phase-locked loops - an important circuit...
    Resource Type:
    Masters Thesis
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.7 SEE on one of the delay cells of a Lee/Kim ring oscillator. . . . . . . . . . 12 2.8 SEE on

  • Low power design techniques for analog-to-digital converters in submicron CMOS

    Creator:
    Musah, Tawfiq
    Abstract:
    Advances in process technologies have led to the development of low-power high speed digital signal processing blocks that occupy small areas. These advances are critical in the development of portable electronic devices with small feature size and long battery life. However, the design of analog and mixed-signal building blocks, especially...
    Resource Type:
    Dissertation
    Full Text:
    Kratyuk, Ting Wu, Josh Carnes, Andrew Tabalujan, Kye-Hyung Lee, Jim Le, Christopher Hanken and Igor

  • A stochastic time-to-digital converter for digital phase-locked loops

    Creator:
    Ok, Kerem
    Abstract:
    Digital phase-locked loops (PLLs) have been receiving increasing attention recently due to their ease of integration, scalability and performance comparable to their analog counterparts. In digital PLLs, increased resolution in time-to-digital conversion is desirable for improved noise performance. This work describes the design and simulation of a stochastic time-to-digital converter...
    Resource Type:
    Masters Thesis
    Full Text:
    ) Bang-bang characteristic O ut pu t C od e Input Phase Error (ps) O ut pu t C od e Input

  • 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