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Filtering by: Creator Hires, C. L. Remove constraint Creator: Hires, C. L. Degree Field Electrical and Computer Engineering Remove constraint Degree Field: Electrical and Computer Engineering Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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  • Analog integrated circuit design using GaAs C-HFETs

    Creator:
    Gupta, Rakhee
    Abstract:
    Present day data processing technology requires very high speed signal processing and data conversion rates. One such application which requires high speed is switched capacitor circuits used in Sigma-Delta modulators. A major active component of switched capacitor circuits is the monolithic operational amplifier(opamp). Because of the relatively poor speed performance...
    Resource Type:
    Masters Thesis
    Full Text:
    Analog Integrated Circuit Design using GaAs C-HFETs AN

  • Weather influence on Loran-C

    Creator:
    Graulich, Markus Günter
    Abstract:
    The influence of weather on the long range radio navigation system Loran-C was investigated. The variables analyzed over a period of 255 days were: time differences (TDs), TD signal-to-noise ratios, TD standard deviations (measured at a fixed receiver location in Corvallis, Oregon), time interval numbers (TINOs) (measured at the transmitter...
    Resource Type:
    Masters Thesis
    Full Text:
    Weather influence on Loran-C AN ABSTRACT OF THE THESIS OF

  • Failure analysis of Muller-C-element

    Creator:
    Chew, Oonpin
    Abstract:
    Asynchronous circuits have recently been a breakthrough in many high performance computers. The concept of asynchronous circuits which started a long time ago has slowly grasped the attention of many designers. The Muller-C-element is an important control block in many asynchronous designs and therefore it is important to understand some...
    Resource Type:
    Masters Thesis
    Full Text:
    )--No- Feedback Environment C Pd C Pd Din .00,... REG 0110- REG Dout Cd P Cd P L Ain Aout

  • The identification of Dungeness crab from the power spectral density function of their acoustic signature

    Creator:
    Eghbali, Hassan J.
    Abstract:
    The power spectral density of the acoustic signature of Dungeness crab was calculated by the use of digital computer. The signal produced by the Dungeness crab was an analog signal. Therefore a conversion of the signal from analog to digital was necessary. This was done by sampling the acoustic signature...
    Resource Type:
    Masters Thesis
    Full Text:
    ACOUSTIC SIGNATURE Abstract approved: Redacted for privacy L. c: Jensen The power spectral density of the

  • LORAN-C receiver position estimation from noisy time-difference data

    Creator:
    Weisshaar, Andreas
    Abstract:
    In order to analyze the accuracy of the navigation system LORAN-C, we have collected time - difference (TD) data from the U.S. west coast chain (9940) at a fixed receiver location (Corvallis, Oregon). The analysis of the TD data shows an unexpected high correlation between the TDs as well as...
    Resource Type:
    Masters Thesis
    Full Text:
    each triad). The error ellipses are shown in Fig 3.2. 38 (a) (b) (C) .9 z L., 0 O 30 20

  • A multi-bit delta sigma audio digital-to-analog converter

    Creator:
    Wang, Ruopeng
    Abstract:
    Digital-to-analog converters (DACs) with wide dynamic range and high linearity are required for high-end audio applications. A multi-bit delta sigma audio DAC, using a novel gain-correction technique, is described in this thesis. For widely varying on-chip RC time constant, the DAC gain can be accurately controlled by the correction circuitry....
    Resource Type:
    Dissertation
    Full Text:
    -Bit Delta Sigma Audio Digital-to-Analog Converter Abstract approved: Gabor C. Temes Un-Ku Moon

  • Liquid crystal thermography : a new system for breast cancer detection

    Creator:
    Bichara, Kamal Fouad
    Abstract:
    A liquid crystal thermographic technique was developed for application to several problems in clinical medicine and physiology. The procedure was inexpensive, rapid, simple, versatile and acceptable to patients. Investigators in the past have used cholesteric liquid crystals for thermography but their use was limited to research in the medical field...
    Resource Type:
    Dissertation
    Full Text:
    Dr. C. C. Chang A liquid crystal thermographic technique was devel- oped for application to several

  • A tunable duty-cycle-controlled switched-R-MOSFET-C CMOS filter for low-voltage and high-linearity applications

    Creator:
    Xiao, Ying
    Abstract:
    A novel switched-R-MOSFET-C input branch is proposed for low-voltage and high-linearity applications. The tunability is achieved by varying the clock duty cycle using an automatic tuning circuit. This tuning method does not involve a change in gate voltage, and is therefore particularly suitable for low-voltage applications. The advantages of the...
    Resource Type:
    Masters Thesis
    Full Text:
    amplitude of 1.8V. The clock is a 20 MHz, 50% duty cycle square wave. R1 = R2 = l kQ, R0n=35 Q, C=50 pF

  • A parametric analysis of the capabilities of undersea acoustic imaging

    Creator:
    Calligan, C. C.
    Abstract:
    The feasibility of utilizing acoustic imaging techniques for improving the undersea viewing capability of small submersibles is investigated. The limiting values of major parameters in acoustic imaging systems are established and graphs which illustrate the parametric relationships are presented. A series of sample calculations illustrate how the graphs can be...
    Resource Type:
    Masters Thesis
    Full Text:
    acoustic energy. Number of Sensors per Side (N) is the e--1 CD CO h L.1 'CT el t11 10 1 C' Cs.1 - C:11

  • A computer simulation model of land use dynamics in the State of Oregon

    Creator:
    Calligan, C. C.
    Abstract:
    The dynamics of land use in the State of Oregon are simulated on a digital computer. The introductory chapter outlines the complex nature of the problems facing the post-industrial society and argues that the scientific and professional estates share in the responsibility for public policy formulation. The second chapter .presents...
    Resource Type:
    Dissertation
    Full Text:
    simulations of socio-economic systems; land use policy in Oregon; interdisciplinary research. (C