• Torque Performance of Optimally Designed Multi-Phase Reluctance DC Machines 

      Rakgati, Edward Tshitshiri (Stellenbosch : University of Stellenbosch, 2006-12)
      The focus of this thesis is on the critical evaluation of the torque performance of the optimum designed reluctance DC machine (RDCM). The thesis focuses on multi-phase RDCM drives with normal laminated salient pole rotors ...
    • Total ionizing dose mitigation by means of reconfigurable FPGA computing 

      Smith, Farouk (Stellenbosch : University of Stellenbosch, 2007-12)
      There is increasing use of commercial components in space technology and it is important to recognize that the space radiation environment poses the risk of permanent malfunction due to radiation. Therefore, the integrated ...
    • Training neural word embeddings for transfer learning and translation 

      Gouws, Stephan (Stellenbosch : Stellenbosch University, 2016-03)
      ENGLISH ABSTRACT: In contrast to only a decade ago, it is now easy to collect large text corpora from theWeb on any topic imaginable. However, in order for information processing systems to perform a useful task, such as ...
    • Tunable evanescent mode X-band waveguide switch 

      Sickel, Thomas (Stellenbosch : University of Stellenbosch, 2005-12)
      A tunable X-band PIN diode switch, implemented in evanescent mode waveguide, is presented. To allow in-situ tuning of resonances after construction, a novel PIN diode mounting structure is proposed and verified, offering ...
    • Tunable narrow-band X-band bandpass filters 

      Meyer, Elmine (Stellenbosch : Stellenbosch University, 2018-03)
      ENGLISH ABSTRACT: This dissertation proposes two narrow-band tunable X-band filters from different classes, one planar and one waveguide. The first is a suspended substrate varactor-tuned doubly end-loaded staircase filter ...
    • Using probabilistic graphical models to detect dynamic objects for mobile robots 

      Brink, Daniek (Stellenbosch : Stellenbosch University, 2016-12)
      ENGLISH ABSTRACT: An autonomous mobile robot must be able to identify moving objects in its environment, continually as it is operating, for accurate environment mapping and collision-free navigation. This is not an easy ...
    • Variable bandwidth planar coupled resonator filters utilizing tunable non-resonant node inverters 

      Sharma, Satyam Kumar (Stellenbosch : Stellenbosch University, 2018-12)
      ENGLISH ABSTRACT: This dissertation presents a novel design technique for designing microstrip staircase and pedestal substrate integrated waveguide (SIW) filters with tunable bandwidth. The design technique utilizes ...
    • A vision-based South African sign language tutor 

      De Villiers, Hendrik Adrianus Cornelis (Stellenbosch : Stellenbosch University, 2014-04)
      ENGLISH ABSTRACT: A sign language tutoring system capable of generating detailed context-sensitive feedback to the user is presented in this dissertation. This stands in contrast with existing sign language tutor systems, ...
    • Wideband modelling and parameter estimation of two-winding transformers 

      Brozio, C. C. (Stellenbosch : Stellenbosch University, 1999-12)
      ENGLISH ABSTRACT: This dissertation proposes a new wideband, lumped-parameter equivalent-circuit transformer model that is suitable for parameter estimation applications, while reflecting the internal electromagnetic ...
    • Wideband modelling of capacitive voltage sensors for open-air transmission line applications 

      Schilder, Melanie (Stellenbosch : Stellenbosch University, 2002-12)
      ENGLISH ABSTRACT: This dissertation considers the wideband modelling of capacitive voltage sensors for open-air transmission line applications. Two novel topologies were introduced, namely a differential parallel plate ...
    • Wood microwave dielectric heating and measurement of material properties 

      Rimbi, Morris (Stellenbosch : Stellenbosch University, 2004-12)
      ENGLISH ABSTRACT: Microwave heating technology is extensively used in households, is well-established in certain industries and is being explored in others. lts attraction is that it is quick, energy efficient, clean and ...