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Filtering by: Creator Ohm, Robin A. Remove constraint Creator: Ohm, Robin A. Advisor Allstot, David J. Remove constraint Advisor: Allstot, David J.

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  • A CMOS differential line driver

    Creator:
    Jiang, William
    Abstract:
    A short-circuit-protected line-driver circuit is particularly adapted for use in a CMOS differential line-driver system, where one line-driver circuit provides a true output signal, and another line-driver circuit provides a complementary false output signal. A short-circuit is sensed by measuring current through a secondary pull-up transistor, and disabling a primary...
    Resource Type:
    Masters Thesis
    Full Text:
    A CMOS differential line driver AN ABSTRACT OF THE THESIS

  • A universal CMOS current-mode operational amplifier

    Creator:
    Botelho, Cindy
    Abstract:
    It has become customary in electrical engineering to think of signal processing in terms of voltage variables to the exclusion of current variables. This tendency has resulted in voltage signal processing circuits such as voltage-controlled voltage sources (VCVS) and voltage-mode operational amplifiers. However, the VCVS operational amplifier has several limitations...
    Resource Type:
    Masters Thesis
    Full Text:
    A universal CMOS current-mode operational amplifier AN

  • A high-swing CMOS operational amplifier topology

    Creator:
    Yang, John Jian
    Abstract:
    A circuit topology for high-swing, high-linearity CMOS operational amplifiers has been developed. The technique uses parallel-connected p- and n-channel input pairs to realize an input common-mode voltage range nearly equal to the total power supply voltage. High linearity is achieved by summing the DC bias and AC small-signal currents so...
    Resource Type:
    Masters Thesis
    Full Text:
    A high-swing CMOS operational amplifier topology AN

  • A P-well GaAs MESFET technology

    Creator:
    Canfield, Philip C.
    Abstract:
    The semiconductor gallium arsenide (GaAs) has many potential advantages over the more widely used semiconductor silicon (Si). These include higher low field mobility, semi-insulating substrates, a direct band-gap, and greater radiation hardness. All these advantages offer distinct opportunities for implementation of new circuit functions or extension of the operating conditions...
    Resource Type:
    Dissertation
    Full Text:
    in Fig. 2.7. The drain of the MESFET is terminated with a 50 ohm resistor to provide impedance

  • A chopper-stablized CMOS operational amplifier

    Creator:
    Ann, Seung-Han
    Abstract:
    The chopper-stabilized operational amplifier has good low frequency noise properties. Unfortunately a simple technique for simulation of the chopper-stabilized operational amplifier has not been available. This thesis describes the implementation of a differential amplifier using chopper stabilization and its circuit modeling for the SPICE simulation. This circuit has been designed...
    Resource Type:
    Masters Thesis
    Full Text:
    of Master of Science in Electrical and Computer Engineering presented on May 23.1988. Title: A

  • CMOS analog design using a digital gate array

    Creator:
    Liu, Tian-chen
    Abstract:
    The core area of a conventional CMOS digital gate array consists of only one size of NMOS device and one size of PMOS device. Both primitives have fixed minimum channel lengths, and this has significantly impeded analog applications. This work has shown that by forming series and parallel interconnections between...
    Resource Type:
    Masters Thesis
    Full Text:
    load resistance of 150 K Ohm. 6. (a) A typical inverter which consists of a single active device and a

  • Switch-capacitor Power Amplifier with Enhanced Power Back-off Efficiency and Linearity

    Creator:
    Qiao, Bo
    Abstract:
    Nowadays, wireless communication systems use high-order quadrature amplitude modulation (QAM) together with orthogonal frequency-division multiplexing (OFDM) to increase the link capacity and robustness. These signals always have large peak-to-average power ratio (PAPR) and require power amplifiers (PAs) achieve both high efficiency and linearity simultaneously. For the efficiency, the complementary metal...
    Resource Type:
    Dissertation
    Full Text:
    matching between the 50-ohm load and eight SCPA cores, a theoretical drain efficiency (TDE) is calculated

  • Design and computer-aided optimization of RF CMOS power amplifiers

    Creator:
    Gupta, Ravi
    Abstract:
    In recent years, there has been an extensive effort to develop low-cost implementations of radio frequency integrated circuits for consumer applications. This thesis is a research effort in the design and implementation of integrated RF CMOS Power Amplifiers (PAs). A significant challenge in the implementation of RF CMOS ICs is...
    Resource Type:
    Dissertation
    Full Text:
    for consumer applications. This thesis is a research effort in the design and implementation of

  • CMOS low noise amplifier design utilizing monolithic transformers

    Creator:
    Zhou, Jianjun J.
    Abstract:
    Full integration of CMOS low noise amplifiers (LNA) presents a challenge for low cost CMOS receiver systems. A critical problem faced in the design of an RF CMOS LNA is the inaccurate high-frequency noise model of the MOSFET implemented in circuit simulators such as SPICE. Silicon-based monolithic inductors are another...
    Resource Type:
    Dissertation
    Full Text:
    amplifiers (LNA) presents a challenge for low cost CMOS receiver systems. A critical problem faced in the

  • Model and design of cmos phase-locked loop

    Creator:
    Shum, Daniel K.
    Abstract:
    This thesis will examine the model and design technique of a self-contained analog CMOS Phase-Locked Loop. This system has an adaptable filter and demodulator for an oscillating frequency of up to 1000 KHz and it is programmable by means of an external resistor and capacitor. The first topic to be...
    Resource Type:
    Masters Thesis
    Full Text:
    = (4.28) 2 Rcs Ccs If the resistor Rcs is choosen to be fixed at 4K ohm, a linear relationship between

  • Modeling of subthreshold current of GaAs MESFET and the design of voltage reference circuit

    Creator:
    Or, Pee-Keong
    Abstract:
    The characteristic of the subthreshold current in a GaAs MESFET exhibits a negative exponential function with Vgs. After studying the behavior of this current in this region over a range of temperature and drain bias voltages, a subthreshold current model was developed. The model was implemented in a circuit simulation...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: Redacted for Privacy David Allstot The characteristic of the subthreshold current in a GaAs

  • Analytical model of GaAs MESFET output conductance with frequency and temperature dependent parameters

    Creator:
    Lam, Steven C. F.
    Abstract:
    The output characteristics of a conventional GaAs depletion-mode MESFET device have been investigated. One of the important parameters of the small-signal GaAs MESFET model, g[subscript ds] (output conductance), is shown to be frequency and temperature dependent. Variations in g[subscript ds] are a serious problem in many analog and digital circuits...
    Resource Type:
    Masters Thesis
    Full Text:
    two separate dc power supplies. A 50 ohm sense resistor on the drain side was used to monitor the dc

  • MOS switched-current biquadratic filters

    Creator:
    Lee, Bor
    Abstract:
    A MOS biquadratic (biquad) filter employing the switched-current technique is reported. The circuit uses current-mode processing which can offer wide bandwidth, low voltage operation, and can be implemented with standard CMOS technology. Examples of lowpass, highpass, and bandpass filters are given which illustrate the synthesis procedures and the versatility of...
    Resource Type:
    Masters Thesis
    Full Text:
    for Privacy/ vavia J. All StOt A MOS biquadratic (biquad) filter employing the switched-current

  • Power amplifier design in digital CMOS processes

    Creator:
    Forejt, Brett E.
    Abstract:
    The ability to integrate designs from board level, multi-chip modules to single process solutions is highly attractive in today's PC multimedia industry. Saving board area and chip count will decrease the production cost of personal computing hardware and increase profitability. The ability to integrate analog circuit capability and it's reference...
    Resource Type:
    Masters Thesis
    Full Text:
    and it's reference circuitry with DSP cores and processors creates a highly profitable line of