Browsing Masters Degrees (Electrical and Electronic Engineering) by Title

Now showing items 456-475 of 487

  • A T-resonator technique for aperture plane admittance parameters of electrically short RF monopoles 

    Kwinana, Phumezo M. (Stellenbosch : University of Stellenbosch, 2006-12)
    This thesis focuses on the coaxial-microstrip T-resonator measurement technique to determine the aperture plane capacitance and radiation resistance of electrically short monopoles above a finite ground plane at Radio ...

  • Techniques for enhancing the PLD growth of superconducting YBCO thin films 

    Hardie, Graham Lyall (Stellenbosch : Stellenbosch University, 2014-12)
    ENGLISH ABSTRACT: High Temperature Superconductors (HTS) exhibit exceptional electrical properties that make them attractive candidates for numerous electronic devices and applications. However, constructing working ...

  • A three-phase AC/AC matrix converter system 

    Gebrehiwet Gebregergis, Abraham (Stellenbosch : University of Stellenbosch, 2004-12)
    ENGLISH ABSTRACT: The thesis discusses the analysis and design of a three-phase-to-three-phase direct AC-AC matrix converter. A background study of the various matrix converter topologies and their modulation strategies ...

  • Time domain metrology for MeerKAT systems 

    Matthysen, Nardus (Stellenbosch : Stellenbosch University, 2014-12)
    ENGLISH ABSTRACT: This work in this study covers a powerful technique to derive propagation and scattering information in an expedient fashion. Expedient because time-domain (TD) data gathers a broad spectrum in a single ...

  • Towards a distributed real-time system for future satellite applications 

    Rozendaal, A. (Abraham) (Stellenbosch : Stellenbosch University, 2003-12)
    ENGLISH ABSTRACT: The Linux operating system and shared Ethernet are alternative technologies with the potential to reduce both the development time and costs of satellites as well as the supporting infrastructure. Modular ...

  • Towards understanding and improving the safety of informal public transport in Sub-Saharan Africa : a real-time sensing and reporting system for minibus taxis 

    Zeeman, Adriaan Siebrits (Stellenbosch : Stellenbosch University, 2013-12)
    ENGLISH ABSTRACT: Developed countries have led the way in the implementation of Intelligent Transport Systems (ITS), with the main objectives of improving road safety and efficiency. Current ITS solutions are heavily ...

  • Tracking collar and infrastructure for leopard research 

    Warnich, Dirk J. (Stellenbosch : Stellenbosch University, 2012-12)
    ENGLISH ABSTRACT: This project targeted the development of a new tracking collar, trap telemetry system and supporting infrastructure, to aid researchers from the Cape Leopard Trust. Previously used collar products had ...

  • Transformerless series dip/sag compensation with a multilevel cascaded inverter 

    Visser, Abraham Johannes (Stellenbosch : Stellenbosch University, 2001-12)
    ENGLISH ABSTRACT: This thesis covers the development of a multilevel cascaded inverter for the purpose of costeffective transformerless series dip compensation. Of all known power quality problems, voltage dips are the ...

  • Transformerless series dip/sag compensation with ultracapacitors 

    Becker, Martin Gerhard (Stellenbosch : University of Stellenbosch, 2004-12)
    ENGLISH ABSTRACT: This thesis covers the development of a transformerless series dip compensator. Of all known power quality problems, voltage dips are the greatest reason for concern. Series injection dip compensators offer ...

  • Transient modelling of induction motors in a petrochemical plant using Matlab 

    Claassens, Andries Johannes (Stellenbosch : Stellenbosch University, 2008-03)
    ENGLISH ABSTRACT: The behaviour of induction motors at a petrochemical plant under transient conditions was investigated with the view to improve plant immunity to voltage fluctuations. The benefits of using a ...

  • The transputer virtual memory system 

    Mostert, Sias (Stellenbosch : Stellenbosch University, 1990)
    ENGLISH ABSTRACT: The transputer virtual memory system provide, for the transputer without memory management primitives, a viable virtual memory system. This report evaluates the architecture and its parameters. The ...

  • Tree-based Gaussian mixture models for speaker verification 

    Cilliers, Francois Dirk (Stellenbosch : University of Stellenbosch, 2005-12)
    The Gaussian mixture model (GMM) performs very effectively in applications such as speech and speaker recognition. However, evaluation speed is greatly reduced when the GMM has a large number of mixture components. ...

  • Tune-all wideband planar filters for KAT-7 

    Beukman, Theunis Steyn (Stellenbosch : Stellenbosch University, 2011-12)
    ENGLISH ABSTRACT: A new type of wideband lters, with tunability in both the centre frequency and bandwidth, is presented in this thesis. These lters are based on perturbed ring-resonators in cascade, while varactor ...

  • A unified strategy for windup prevention in control systems with multiple saturating actuators 

    Browne, Michael John (Stellenbosch : Stellenbosch University, 2000-12)
    ENGLISH ABSTRACT: A unified method is proposed to treat saturation in both Multi-Input-Multi-Output MIMO and Single-Input-Single-Output controllers. This method offers superior performance over existing MIM 0 anti-saturation ...

  • An unmanned aircraft system for maritime search and rescue 

    Meredith, Andre Paul (Stellenbosch : University of Stellenbosch, 2011-03)
    ENGLISH ABSTRACT: Search and Rescue is an essential service provided by States and Militaries to search for, locate and rescue survivors of accidents and incidents. Civil Search and Rescue utilizes a system of well-trained ...

  • Unsupervised clustering of audio data for acoustic modelling in automatic speech recognition systems 

    Goussard, George Willem (Stellenbosch : University of Stellenbosch, 2011-03)
    ENGLISH ABSTRACT: This thesis presents a system that is designed to replace the manual process of generating a pronunciation dictionary for use in automatic speech recognition. The proposed system has several stages. The ...

  • Upgrading of a radar system to implement a firmware based pulse compressor 

    Rust, Johannes Stephanus Warnich (Stellenbosch : Stellenbosch University, 2007-03)
    ENGLISH ABSTRACT: This project investigates the improvement of an existing radar system by means of currently available technologies and signal processing techniques. Upgrades are aimed to improve the system's speci cations ...

  • USB telephony interface device for speech recognition applications 

    Muller, J. J. (Stellenbosch : University of Stellenbosch, 2005-12)
    Automatic speech recognition (ASR) systems are an attractive means for companies to deliver value added services with which to improve customer satisfaction. Such ASR systems require a telephony interface to connect the ...

  • Using ad hoc wireless networks to enable intelligent transport systems: the design and analysis of the TH(O)RP routing protocol 

    Morrison, Daniel Weich (Stellenbosch : University of Stellenbosch, 2007-03)
    With the rapid advancement of communication technologies and broadband communication, an era is starting to emerge where everything and everyone is always connected, regardless of geography. No other technology has made ...

  • Using Micro-Doppler radar signals for human gait detection 

    Alzogaiby, Adel (Stellenbosch : Stellenbosch University, 2014-04)
    ENGLISH ABSTRACT: This work entails the development and performance analysis of a human gait detection system based on radar micro-Doppler signals. The system consists of a tracking functionality and a target classifier. ...