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Browsing Electrical, Electronic and Computer Engineering by Type "Dissertation"
Now showing items 1-20 of 336
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(University of Pretoria, 2009-04-08)This research looks into the design of an integrated in-phase/quadrature (I/Q) VCO operating at 5 GHz. The goal is to design a phase shifter that is implemented at the LO used for RF up conversion. The target application ...
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(University of Pretoria, 2018)Dual-circularly polarized antennas usually consist of a radiating structure and a feed network capable of generating the �90� modes required for dual circular polarization. The problem is that these feed networks often ...
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(University of Pretoria, 2019)The continuously growing number of wireless devices and the demand for wireless local area network (WLAN) coverage received a lot of research and design attention during the past decade. The WLAN application is a popular ...
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(University of Pretoria, 2019)The continuously growing number of wireless devices and the demand for wireless local area network (WLAN) coverage received a lot of research and design attention during the past decade. The WLAN application is a popular ...
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(University of Pretoria, 2017)Multiple drive belt conveyors are being increasingly incorporated in mining plans worldwide because of their high economic performance and the ease of moving these installations around, especially in underground mines. A ...
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(University of Pretoria, 2017)In the mining industry, methods to reduce the fuel consumed in the haulage operations are largely sought as a result of the growing energy demand, fuel cost increases and adverse environmental impacts due to the emission ...
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(University of Pretoria, 2017)The standardisation of the 60 - 80 GHz band by the IEEE802.15.3 task group 3C offers prospects for high speed gigabit wireless applications. This mm-wave band can be used to achieve high data rate transmission in high ...
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(University of Pretoria, 2005-11-01)Speaker accent influences the accuracy of automatic speech recognition (ASR) systems. Knowledge of accent based acoustic variations can therefore be used in the develop¬ment of more robust systems. This project investigates ...
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(University of Pretoria, 2008-08-19)High levels of speech recognition have been obtained with cochlear implant users in quiet conditions. In noisy environments, speech recognition deteriorates considerably, especially in speech-like noise. The aim of this ...
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(University of Pretoria, 2007-11-22)AC-DC converters find application in every day life as a front-end to DC-DC and DC-AC converters. Active three-phase converters shape the three-phase input current to be sinusoidal and to be in-phase with the input voltage, ...
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(University of Pretoria, 2002)This dissertation considers a method to convert an ordinary cipher system, as used to secure e-commerce transactions, into an unconditionally secure cipher system, i.e. one that generates ciphertext that does not contain ...
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(University of Pretoria, 2019)By placing clusters of renewable-based AC microgrids in low-voltage radial distribution networks, emergent energy demands can be met. However, this leads to fundamental changes and challenges in the topology and protection ...
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(University of Pretoria, 2019)Post-implantation facial nerve stimulation is a common side-effect of cochlear electrical stimulation. Facial nerve stimulation can often be resolved through adjustments in speech processor fitting but, in some instances, ...
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(University of Pretoria, 2011-07-14)This dissertation presents the findings of a generic model aimed at providing secure communication with remote computers via the Internet, based on smart cards. The results and findings are analysed and presented in great ...
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(University of Pretoria, 2006-12-20)Please read the abstract in the section 00front of this document.
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(University of Pretoria, 2007-01-24)A comparison of the ability of different spatial filters to reduce the amount of crosstalk in a surface electromyography (sEMG) measurement was conducted. It focused on the influence of different properties of the muscle ...
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(University of Pretoria, 2017)Cyber security is a major concern due to global incidents of intrusion. The impact of the attacks on the electricity grid can be significant, resulting in the collapsing of the national economy. Electricity network is ...
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(University of Pretoria, 2023-12-01)Traditional reticulation network designs are outdated, based on single value static yearly maximum demands, and do not consider the dynamic nature of load-side DR installations. The increasing presence of privately driven ...
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(University of Pretoria, 2010-11-01)In the late 20th century the reliable and efficient transmission, reception and storage of information proved to be central to the most successful economies all over the world. The Internet, once a classified project ...
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(University of Pretoria, 2010-01-27)The design of antenna arrays involves, amongst others, the selection of the array elements and geometry, as well as the element excitations. The feeding network to obtain the desired excitations can become quite complex, ...
Now showing items 1-20 of 336