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  • Low-pass to band-pass transformation in polar form

    Creator:
    Ewing, Gerald Dean
    Resource Type:
    Masters Thesis
    Full Text:
    filter, which has the desired response characteristics, and then transform these known pole locations

  • Tone burst deconvolution

    Creator:
    Rathja, Roy C.
    Abstract:
    The suitability of discrete least-squares optimal (Wiener) filters for deconvolution of tone-burst waveforms is studied. It is shown that: (1) such waveforms are not well suited to these filters without preprocessing, (2) the use of exponential weighting results in a significant improvement in filter performance and (3) that "phase-unwrapping" in...
    Resource Type:
    Dissertation
    Full Text:
    improvement ip filter performance and (3) that "phase-un- wrapping" in the z-plane results in a useful

  • A DSP controlled resonant active filter for current harmonic mitigation in three-phase power systems

    Creator:
    Ünsal, Abdurrahman
    Abstract:
    Power quality has become an important concern to both electric utilities and end users due to the increased use of non-linear loads in modem power systems over the past decade. Nonlinear loads inject harmonics into the power system and thus may lead to poor power quality and lower power factor....
    Resource Type:
    Dissertation
    Full Text:
    . Title: A DSP Controlled Resonant Active Filter for Current Harmonic Mitigation in Three-Phase Power

  • 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:
    , 2004 . Title: A Tunable Duty-Cycle-Controlled Switched-R-MOSFET-C CMOS Filter for Low-Voltage and

  • Digitally-programmable switched-current filters

    Creator:
    Yesilyurt, Ayse Gul
    Abstract:
    Digitally-programmable filters have been an ongoing research topic for a number of years. The first such filters were FIR transversal filters using Charge-Coupled Devices (CCD's) and IIR recursive filters using switched-capacitor (SC) techniques. Although both techniques achieve excellent results, they require non-standard and/or additional IC fabrication steps. Low substrate doping...
    Resource Type:
    Masters Thesis
    Full Text:
    digitally programming a second-order SI filter section. While providing similar capabilities to the

  • Multi-variate morphological filtering with applications to color image processing

    Creator:
    Eo, Jin-woo
    Abstract:
    Mathematical morphology, developed in the early 1960's for single-component signals, has been applied to a number of image processing applications. This investigation examines the systematic extension of mathematical morphology to multi-variate signals. Two approaches are considered. The first approach, the extension of the theory of single-component morphological filters to multi-variate...
    Resource Type:
    Dissertation
    Full Text:
    mathematical morphology, including the following: (1) Morphological filters have the ability to filter out

  • Sensitivity analysis and architectural comparison of narrow-band sharp-transition digital filters

    Creator:
    Kulkarni, Satish S.
    Abstract:
    Due to advances in high-density low-cost VLSI and communication technology, digital filtering and signal processing are being widely used for real-time signal processing applications. Given the filter specification, choosing the best filter structure for a given application is not a trivial task. The choice of a particular filter structure depends...
    Resource Type:
    Masters Thesis
    Full Text:
    filter specification, choosing the best filter structure for a given application is not a trivial task

  • High speed digital FIR filter design

    Creator:
    Zhou, Bo
    Abstract:
    The objective of this thesis is to design a high speed digital FIR filter. The inputs of the system come from a Delta-Sigma modulator. This FIR filter takes 1024 inputs, multiplies them with their coefficients and adds the results. The main design task is to take the input data, which...
    Resource Type:
    Masters Thesis
    Full Text:
    High speed digital FIR filter design AN ABSTRACT OF THE

  • New configurations of bandpass filters in single and multilayer environment

    Creator:
    Gururajan, Kala
    Abstract:
    Mobile and telecommunication industry has experienced tremendous growth in the recent past. Miniaturization and increased functionality have become necessary for all passive components in the system. Bandpass filters are critical passive components in any communication system and the existing designs in the crucial 1-10 GHz bandwidth suffer many drawbacks. For...
    Resource Type:
    Masters Thesis
    Full Text:
    . However, many of the existing filter designs do not take optimum advantage of the emerging technologies

  • Analysis and design of bandpass delta-sigma A/D converters

    Creator:
    Zhai, Dalun
    Abstract:
    A new approach to oversampled delta-sigma A/D converters ( AZ modulators ) is introduced, where a differential pseudo-Npath filter stage is used as a basic cell. In this band-pass application, the z to -zN transformation is employed to realize a RAM-type pseudo-2-path lossless integrator. The bandpass second-order and 4th-order delta-sigma...
    Resource Type:
    Masters Thesis
    Full Text:
    filter stage is used as a basic cell. In this band-pass application, the z to -zN transformation is