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Filtering by: Creator Volker, K. C. Remove constraint Creator: Volker, K. C. Committee Member Nguyen, Thinh Remove constraint Committee Member: Nguyen, Thinh

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  • An efficient frequency controlled PFM for DC-DC converters

    Creator:
    Pai, Jeff
    Abstract:
    As more features are being integrated into mobile platforms, the demand for long battery life during standby mode has been increasing. Light load efficiency becomes one of essential features in today's DC-DC converter. The most effective method to improve light load efficiency is to operate the DC-DC converter under pulse-frequency-modulation...
    Resource Type:
    Masters Thesis
    Full Text:
    ....................................................................................................... 11  Figure 2.6: (a) Asynchronous Boost Converter; (b) On-time Switching Cycle, S1 turned on; (c

  • A high power emulation of a wind farm

    Creator:
    Lalla, Chelsea
    Abstract:
    As more wind farms are connected to the grid, the variable nature of wind energy begins to influence grid stability. Energy storage could help smooth the variable nature of wind energy. Laboratory demonstration and exploration of the interaction between different energy storage devices and wind energy could help improve and...
    Resource Type:
    Masters Thesis
    Full Text:
    rr en t (a m ps ) phase current A phase current B phase current C Figure 3.7: Phase

  • Offloading of I/O transactions in current CPU architectures

    Creator:
    Larsen, Steen K.
    Abstract:
    IO transactions within a computer system have evolved along with other system components (i.e., CPU, memory, video) from programmed IO (PIO). In current mainstream systems (spanning from HPC to mobile) the IO transactions are CPU-centric descriptor-based DMA transactions. The key benefit is that slower IO devices can DMA write system...
    Resource Type:
    Dissertation
    Full Text:
    DISSERTATION OF Steen K Larsen for the degree of Doctor of Philosophy in Electrical and Computer Engineering

  • Power Efficient Architectures for Medium-high Resolution Analog-to-Digital Converters

    Creator:
    Sadollahi, Mahmoud
    Abstract:
    Analog-to-digital converters are essential components to the portable devices that we are using today. Wireless sensors, body implanted devices, communication devices and so forth require low power ADCs. Therefore achieving higher resolution and bandwidth with lower power consumption is targeted in ADCs design. In this work power efficient ADCs for...
    Resource Type:
    Dissertation
    Full Text:
    published in: M. Sadollahi, K. Hamashita, K. Sobue and G. C. Temes, "An 11-Bit 250-nW 10- kS/s SAR ADC

  • Linearity enhancement techniques for data converters

    Creator:
    Cao, Jinzhou
    Abstract:
    Data converters are essential interface circuits between the analog world that people live in and the digital processors that people live with. Linearity, which often is a tradeoff against other performance criteria, is one of the major performance demands from applications for both analog-to-digital converts (ADC) and digital-to-analog converters (DAC)....
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Gabor C. Temes Data converters are essential interface circuits between the analog

  • Low-power successive approximation analog to digital converter with digital calibration

    Creator:
    Li, Wei
    Abstract:
    IC designers are continuously facing the challenges from reduced CMOS feature sizes and supply voltages. ADCs that deliver satisfactory resolutions/speeds while utilizing the state-of-the-art technologies to save power are in high demand. The analog circuits are more and more assisted by various digital calibration techniques to get boosted performances. This...
    Resource Type:
    Dissertation
    Full Text:
    ," ISSCC 2011, pp. 190-192, Feb. 2011. [1-11] K. Doris, E. Janssen, C. Nani, A. Zanikopoulos, and G. van

  • Design techniques for low power high speed successive approximation analog-to-digital converters

    Creator:
    Lin, Jiaming
    Abstract:
    This dissertation presents two high-speed pipeline successive approximation analog-to-digital converters (SAR ADCs). Capacitive DACs and resistive DACs are utilized in these two pipeline SAR ADCs, respectively. The pipeline SAR ADC with capacitive DACs can save 50% switching power compared with other time-interleaved SAR ADCs since the total capacitance of the...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Gabor C. Temes This dissertation presents two high-speed pipeline successive

  • Dynamic Error Calibration for Continuous-Time Delta-Sigma Modulator with Multi-GHz Sampling Rate

    Creator:
    He, Tao
    Abstract:
    Continuous-time ΔΣ modulators are widely used in cellular handsets due to their power efficiency and inherent anti-aliasing characteristics. To achieve demanding cellular bandwidth requirements while maintaining good power efficiency, multi-bit feedback is typically used. This approach provides benefits such as lower OSR, relaxed loop filter requirements, and reduced jitter sensitivity....
    Resource Type:
    Dissertation
    Full Text:
    Rate Abstract approved: ______________________________________________________ Gabor C

  • On edge disjoint Hamiltonian cycles in torus and Gaussian networks

    Creator:
    Alazemi, Fawaz M.
    Abstract:
    Many algorithms in parallel systems can be easily solved if we can generate a Hamiltonian cycle on the underly network. Finding Hamiltonian cycle is a well known NP-complete problem. For specific instances of regular graphs, such as Torus and Gaussian network, one can easily find Hamiltonian cycles. In this thesis,...
    Resource Type:
    Masters Thesis
    Full Text:
    (c) H1 and H2 are EDHC on T 3k and H3, H4 are EDHC on T 2 k . Therefore, from the cross product of

  • Design techniques for wideband low-power Delta-Sigma analog-to-digital converters

    Creator:
    Wang, Yan
    Abstract:
    Delta-Sigma (ΔΣ) analog-to-digital converters (ADCs) are traditionally used in high quality audio systems, instrumentation and measurement (I&M) and biomedical devices. With the continued downscaling of CMOS technology, they are becoming popular in wideband applications such as wireless and wired communication systems,high-definition television and radar systems. There are two general realizations...
    Resource Type:
    Dissertation
    Full Text:
    : _____________________________________________________________________ Gábor C. Temes Pavan Kumar Hanumolu Delta-Sigma (ΔΣ) analog-to-digital converters (ADCs