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Filtering by: Creator Miller, Charles B. Remove constraint Creator: Miller, Charles B. Degree Field Electrical and Computer Engineering Remove constraint Degree Field: Electrical and Computer Engineering

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  • Zonal Resource Adequacy for Voltage Control

    Creator:
    Boller, Michael D.
    Abstract:
    In a power system, operators maintain voltage stability through adequate reactive reserves. Maintaining and accessing an efficient allocation of reactive reserves is prohibitively complex because of reactive line losses, the variety of reactive resources, and either limited or variable reactive outputs from renewable sources. By clustering the system into smaller...
    Resource Type:
    Masters Thesis

  • Wideband discrete-time delta-sigma analog-to-digital converters with shifted loop delays

    Creator:
    Meng, Xin
    Abstract:
    Low-distortion architecture is widely used in wideband discrete-time switched-capacitor delta-sigma ADC design. However, it suffers from the power-hungry active adder and critical timing for quantization and dynamic element matching (DEM). To solve this problem, this dissertation presents a delta-sigma modulator architecture with shifted loop delays. In this project, shifted loop...
    Resource Type:
    Dissertation
    Full Text:
    2.9: Bootstrapped clock generator (a) simplified diagram; (b) detailed circuit

  • Wideband and high accuracy delta sigma modulation data converter

    Creator:
    Jung, Youngho
    Abstract:
    Nowadays, needs for wideband and high accuracy analog-to-digital converter are increasing rapidly in manifold applications such as wireless communication, digital video and other consumer electronics. Besides, low power consumption is required to have longer battery life in portable systems. CMOS technology scaling and innovative modulator topology make the implementation much...
    Resource Type:
    Dissertation
    Full Text:
    capacitor is separated from DAC capacitor in prototype A while they are shared in prototype B. Even if

  • 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:
    power-efficient ADC architecture when high resolution (>12-b) is required. This is due to several

  • Wide bandwidth GaAs MESFET amplifier

    Creator:
    Yan, Kai-tuan Kelvin
    Resource Type:
    Masters Thesis
    Full Text:
    Appendices 6 3 List of Figures Figure 2.1 Cross-sectional representation of (a) MESFET and (b) MOSFET 4

  • UWB Low Power RF System for Localization

    Creator:
    Sheokand, Anoop
    Abstract:
    Real time indoor positioning awareness systems aim to add localization capabilities to upcoming wireless technologies that are quickly becoming an important feature for indoor environment. RF-based impulse-radio ultra-wideband (IR-UWB) is a promising technology for in-door positioning systems due to obstacle penetration capabilities, immunity to multi-path and fading, and high resolution....
    Resource Type:
    Masters Thesis
    Full Text:
    formula: C = Blog2(1 + SNR) (3.2) where C represents the maximum channel capacity, B is the bandwidth

  • Use of a model predictive control framework for optimal control of grid scale electrical energy storage in conjunction with a wind farm

    Creator:
    Antonishen, Michael P.
    Abstract:
    Over the last decade, wind penetration in the Pacific Northwest has increased rapidly. The variable nature of this massive new resource has increased stress on the hydropower resource to the point where system limits are currently being reached. In order to cultivate continued growth of the wind energy industry both...
    Resource Type:
    Masters Thesis

  • Understanding the ultra-wideband channel within a computer chassis

    Creator:
    Redfield, Stephen J.
    Abstract:
    Recent developments in computing technology have generated a demand for more streamlined and effective test systems. By replacing traditional in-chassis wired interconnects with a broadcast wireless system, fault detection and error susceptibility will drastically improve, input/output capabilities will expand, and routing complexity will decrease. Ultra-wideband impulse radio's (UWB-IR) characteristic multipath-immunity...
    Resource Type:
    Masters Thesis
    Full Text:
    , Charles Hu, Jin-jin He, Brad Nelson, Johannes Huschle, Seung-jin and Sang-jun, and Samia El-Amrani for

  • Ultra-Wideband Relay Communication Systems

    Creator:
    Abbasi, Arash
    Abstract:
    Impulse-radio ultra-wide-band (IR-UWB) signaling is a promising technique for high-speed, short-range relay communications networks. Depending on how the relay node retransmits the signal, there are two main relay schemes: conventional one-directional (one-way) relay model, and bi-directional (two-way) relay model. In bi-directional relay communications, wireless network coding (WNC), also called physical-layer...
    Resource Type:
    Dissertation
    Full Text:
    Bfrac = B fc and B = fH − fL. In this case the fractional bandwidth can be rewritten as Bfrac = 2(fH

  • Ultra-low energy digital controller for battery-free wireless sensor network nodes

    Creator:
    Nasroullahi, Mohsen
    Abstract:
    This thesis presents a low-energy application specific digital controller for a battery-free 2.4 GHz wireless sensor network (WSN) node. The digital controller has been designed and fabricated in a standard 0.13 μm CMOS and implements a simple protocol for WSNs. Techniques such as supply voltage reduction and power gating have...
    Resource Type:
    Masters Thesis
    Full Text:
    Asl, Ankur Guha Roy, Chao Shi, and Brian Miller for their help and support during the course of this