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  • Analysis and modeling of monolithic on-chip transformers on silicon substrates

    Creator:
    Mayevskiy, Yevgeniy
    Abstract:
    Passive components, including spiral inductors and transformers, fabricated on silicon-based substrates are placing an increasing demand on radio-frequency integrated circuit (RFIC) design. Performance of the RFIC suffers from several non-ideal effects that must be taken into account in order to create a successful design. In particular, monolithic transformers can be...
    Resource Type:
    Masters Thesis
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2.4 Shunt electric field in monolithic transformer and the circuit model to represent substrate

  • Broadband modeling of on-chip transformers for silicon RFICs

    Creator:
    Rapolu, Kavitha
    Abstract:
    Magnetically coupled passive transformers are increasingly integrated on-chip for various analog and radio frequency (RF) applications including direct current (DC) isolation, impedance transformation/matching, and conversion between single-ended and differential signals. A primary motivation for the on-chip integration of transformers is the overall size reduction and reduced cost. However, the performance...
    Resource Type:
    Masters Thesis
    Full Text:
    circuit model for the monolithic transformer and then apply mathematical modeling methods to improve

  • Instrumentation system for high speed data sampling of electrical machinery

    Creator:
    Brisbine, Glen Edward
    Abstract:
    The objective of this thesis is to develop criteria for a data acquisition system for electrical machinery capable of sampling a signal every 0.2 msec with a desired accuracy of 0.1%. The system to be measured includes both AC and DC voltage and current signals from several points. The main...
    Resource Type:
    Masters Thesis
    Full Text:
    Measurements 55 Appendix V-Instrumentation Amplifier Specifications (AD 521J) 57 Appendix VI-Transformer

  • Frequency domain steady-state simulation of oscillators

    Creator:
    Duan, Xiaochun
    Abstract:
    The focus of this work is on developing algorithms for frequency domain steady-state analysis of oscillators. Convergence problems associated with the frequency domain harmonic balance simulation of oscillators have been examined. Globally convergent homotopy methods have been combined with the harmonic balance method for robust high-Q oscillator simulation. Various homotopy...
    Resource Type:
    Dissertation

  • Identification of synchronous machine parameters

    Creator:
    Shaban, Ali Omar
    Abstract:
    The synchronous machine is an essential component of a power system and determination of its parameters accurately is an important task in securing adequate modes of operation through certain control strategies. An estimation technique based on the Powell algorithm was evaluated for the identification of these parameters on the basis...
    Resource Type:
    Dissertation
    Full Text:
    IDENTIFICATION 2.1 Introduction 10 A fifth-order, flux-linkage, state-space mathematical model and the output

  • Optimal control of an induction motor

    Creator:
    Yarimbiyik, Bulent
    Abstract:
    With the development of converters and inverters, it became possible to control the stator current of an induction motor. The differential equations which describe transient behavior of the induction motor are conveniently expressed by transforming the stator and rotor variables to d-q axes rotating at synchronous speed. The transient behavior...
    Resource Type:
    Masters Thesis
    Full Text:
    Electrical & Computer Engineering in charge of major Redacted for Privacy Head of department(/of Electric

  • Evaluation of the stray load losses for a three-phase induction motor

    Creator:
    Nagornyy, Aleksandr S.
    Abstract:
    The evaluation of the stray-load losses in induction motors is an important part of the efficiency estimation process. However, stray-load losses have several components which are difficult to isolate and calculate. Consequently, they are more readily determined by test. IEEE Standard 112-1996 recommends the testing of electrical induction motors at...
    Resource Type:
    Masters Thesis
    Full Text:
    electricity used in the commercial sector, is consumed by electric motors. In industry, a motor consumes an

  • Model development via delay extraction for the time-domain simulation of lossy transmission lines.

    Creator:
    Blevins, Chris
    Abstract:
    This thesis presents two new approaches for the broadband, time-domain modeling of lossy transmission lines. Each approach is based on an alternative derivation of delay extraction in order to separate the line's linear phase from its attenuation and dispersion. Augmentation networks represent the derived attenuation networks as rational function approximations....
    Resource Type:
    Masters Thesis
    Full Text:
    MODEL DEVELOPMENT VIA DELAY EXTRACTION FOR THE TIME

  • Phase noise models for single-ended ring oscillators

    Creator:
    Godbole, Devavrata
    Abstract:
    The tremendous growth of wireless and mobile communications has resulted in placing of stringent requirements on the channel spacing and, by implication, on the phase noise of oscillators, typically mandating the use of passive LC oscillators with high quality factor (Q). However the trend towards large-scale integration and low cost...
    Resource Type:
    Masters Thesis
    Full Text:
    accurate and efficient, system level model for oscillator phase noise which can be used in simulation is

  • Duty-cycle controlled switched resistor techniques for continuously tunable, low-voltage circuits

    Creator:
    Kurahashi, Peter
    Abstract:
    A duty-cycle controlled switched resistor is a tunable resistive element that uses pulse width modulation as the method of tuning. This thesis will describe the operation of switched resistors and propose several circuit architectures that are well suited to the use of switched resistors. These architectures include filters, mixers, and...
    Resource Type:
    Dissertation
    Full Text:
    generic model of a LPTV system is shown in Fig. 2.5. The input-output behavior of LPTV systems can be