Browsing Masters Degrees (Electrical and Electronic Engineering) by Title

Now showing items 480-487 of 487

  • Waveguide antenna feed for the Square Kilometre Array 

    Schoeman, Karla (Stellenbosch : University of Stellenbosch, 2011-03)
    ENGLISH ABSTRACT: The aim of this thesis is to investigate the suitability of TEM (Transverse Electromagnetic) horn antennas for use as feed structures for the Square Kilometre Array (SKA) radio telescope, in particular with ...

  • Wavelet-based speech enhancement : a statistical approach 

    Harmse, Wynand (Stellenbosch : University of Stellenbosch, 2004-12)
    ENGLISH ABSTRACT: Speech enhancement is the process of removing background noise from speech signals. The equivalent process for images is known as image denoising. While the Fourier transform is widely used for speech ...

  • Wide-band modelling of an air-core power transformer winding 

    Van Jaarsveld, Barend Jacobus (Stellenbosch : Stellenbosch University, 2013-12)
    ENGLISH ABSTRACT: The objective of this project is to develop an electromagnetic model that can be used to accurately calculate the voltage distribution in a transformer winding structure when excited with standard impulse ...

  • Wideband coaxial cable transfer impedance for Karroo Array Telescope 

    Andriambeloson, Joely Andrianina (Stellenbosch : Stellenbosch University, 2011-12)
    ENGLISH ABSTRACT: Through the Karoo Array Telescope, and its extension MeerKAT, South Africa is demonstrating its capabilities to host the most powerful radio telescope ever, the Square Kilometre Array (SKA). This new ...

  • A wideband monopole antenna design 

    Lourens, Jako (Stellenbosch : Stellenbosch University, 2013-03)
    ENGLISH ABSTRACT: The successful operation of a man-pack VHF jamming system requires a compact and efficient antenna operating over a wide bandwidth. The design of such an antenna is the focus of this thesis. The antenna ...

  • A wideband signal conditioning system for high voltage measurements using a transconductance topology 

    Agjee, F. M. D. E. (Faatima, Moosa, Dawood, Ebrahim) (Stellenbosch : Stellenbosch University, 2000-03)
    ENGLISH ABSTRACT: Recent research has shown that standard substation capacitive voltage transformers (CVTs) and current transformers (CTs) can be used for the measurement of wideband high voltage phenomena by employing ...

  • Wind-electric pump system design 

    Lemmer, Edward Charles (Stellenbosch : University of Stellenbosch, 2009-03)
    The aim of this study is to analyse the operation of a wind-electric pumping system (WEPS) as an alternative to conventional mechanical wind pumps for application in stand-alone water-pumping schemes. The steady-state as ...

  • A zinc oxide nanowire pressure sensor 

    Van den Heever, Thomas Stanley (Stellenbosch : University of Stellenbosch, 2010-12)
    ENGLISH ABSTRACT: Measurement of pressure with zinc oxide (ZnO) nanowires was investigated. ZnO exhibits the piezoelectric effect, generating a voltage when pressure is applied to the material. This relationship between ...