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Filtering by: Subject Electric circuits Remove constraint Subject: Electric circuits Decade 2000-2009 Remove constraint Decade: 2000-2009

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  • An efficient modeling approach for substrate noise coupling analysis with multiple contacts in heavily doped CMOS processes

    Creator:
    Özis, Hatice Dicle
    Abstract:
    A computationally efficient and accurate substrate noise coupling model for multiple contacts in heavily doped CMOS processes is presented and validated with simulations and experimental data. The model is based on Z parameters that are scalable with contact separation and size. This results in fast extraction of substrate resistances for...
    Resource Type:
    Masters Thesis
    Full Text:
    large circuit examples. The Z-parameter model can be readily extracted from three dimensional

  • CAM : a new Circuit Augmentation Method for modeling interconnects and passive components

    Creator:
    Kolstad, Joel W.
    Abstract:
    Contemporary circuit design involves significant computer-based simulation, calling for a balance between circuit model accuracy and simulation run time. Traditionally, circuit modelers concentrated on producing either (1) physically-based models, where each element in the model correlates to a physically meaningful aspect of the device being modeled or (2) mathematically-based "macromodels,"...
    Resource Type:
    Masters Thesis
    Full Text:
    Circuit Augmentation Method for Modeling Interconnects and Passive Components Abstract approved: Andreas

  • Modelling of on-chip spiral inductors for silicon RFICs

    Creator:
    Melendy, Daniel
    Abstract:
    In high-frequency circuit design, performance is often limited by the quality of the passive components available for a particular process. Specifically, spiral inductors can be a major bottle-neck for Voltage-Controlled Oscillators (VCOs), Low-Noise Amplifiers (LNAs), mixers, etc. For designers to correctly optimize a circuit using a spiral inductor, several frequency-domain...
    Resource Type:
    Masters Thesis
    Full Text:
    -frequency circuit design, performance is often limited by the qual- ity of the passive components available

  • Analysis and modeling of single-ended and differential spiral inductors in silicon-based RFICs

    Creator:
    Watson, Adam C.
    Abstract:
    A new comprehensive wide-band compact modeling methodology for single-ended spiral inductors and differential spiral inductors is presented. The new modeling methodology creates an equivalent circuit model consisting of frequency-independent circuit elements for use in circuit simulators. A fast automated extraction procedure is developed for determining the circuit element values from...
    Resource Type:
    Masters Thesis
    Full Text:
    creates an equivalent circuit. model consisting of frequency-independent, circuit elements for use in

  • 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

  • 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:
    operation of switched resistors and propose several circuit architectures that are well suited to the use

  • OP-AMP free SC biquad LPF and delta-sigma ADC

    Creator:
    Yoo, Kiseok
    Abstract:
    The objective of this work is to explore the feasibility of replacing conventional op-amps with inverters in switched-capacitor (SC) circuits. In order to verify the idea, a low-pass filter (LPF) and a second-order delta-sigma (∆Σ) analog-todigital converter (ADC) are designed in the 0.5-m CMOS technology. The low-pass filter structure is...
    Resource Type:
    Masters Thesis
    Full Text:
    is demonstrated with system and circuit level

  • Inductors in high-performance silicon radio frequency integrated circuits : analysis, modeling, and design considerations

    Creator:
    Lutz, Richard D., Jr
    Abstract:
    Spiral inductors are a key component of mixed-signal and analog integrated circuits (IC's). Such circuits are often fabricated using silicon-based technology, owing to the inherent low-cost and high volume production aspects. However, semiconducting substrate materials such as silicon can have adverse effects on spiral inductor performance due to the lossy...
    Resource Type:
    Dissertation
    Full Text:
    modeling of such structures over lossy substrate media is key to successful circuit design. The Q's of

  • Metal fill considerations for on-chip interconnects and spiral inductors

    Creator:
    Shilimkar, Vikas S.
    Abstract:
    Variability in circuit performance due to process defects is a major concern in integrated circuit (IC) fabrication. Advanced IC manufacturing processes employ Chemical-Mechanical Polishing (CMP) for planarization of oxide and metal layers. CMP defects result in variations in the oxide and metal topographical profile. To reduce these topographical variations, electrically...
    Resource Type:
    Masters Thesis
    Full Text:
    . . . . . . . 63 4.1 Spiral inductor electric fields and the corresponding elements in the equivalent circuit

  • 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:
    analysis for oscillators, a design-oriented circuit analysis technique, and an oscillator design