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Now showing items 131-140 of 167
Mixed-potential integral equation technique for hybrid microstrip-slotline mutli-layered circuits with horizontal and vertical shielding walls
(Stellenbosch : University of Stellenbosch, 2003-12)
ENGLISH ABSTRACT: A complete mixed-potential integral equation formulation for the analysis of arbitrarily
shaped scatterers in a planarly layered medium is presented. The integral equation is
able to solve for simultaneous ...
Upgrading of a radar system to implement a firmware based pulse compressor
(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 ...
An investigation into underwater navigation accuracy with regard to sensor combinations and quality
(Stellenbosch : Stellenbosch University, 2008-03)
A navigation performance sensitivity study with respect to the quality variation
of sensors and sensor combinations is presented in this thesis.
Navigation simulation software capable of using real-time and simulated
sensor ...
S-band monopulse radar receiver design and implementation
(Stellenbosch : University of Stellenbosch, 2006-03)
This thesis documents the design and implementation of an S-band receiver for phasecomparison
monopulse radar. The design and evaluation of the various sub-systems involved
in realizing the receiver are discussed in ...
Design and implementation of a modular converter with application to a solid state transformer
(Stellenbosch : University of Stellenbosch, 2009-12)
ENGLISH ABSTRACT: The purpose of a solid state transformer (SST) is to use power electronic converters to mimic
the operation of the conventional distribution transformer. These power electronic converters
are proposed ...
The design and analysis of a DC SQUID for a SQUID microscope
(Stellenbosch : Stellenbosch University, 2008-12)
This thesis relates to the analysis and design of a SQUID microscope. Superconductor theory is discussed
in depth to provide a thorough understanding of Josephson junctions and of dc SQUID magnetometers.
The behaviour ...
Bird song recognition with hidden Markov models
(Stellenbosch : Stellenbosch University, 2008-03)
Automatic bird song recognition and transcription is a relatively new field. Reliable
automatic recognition systems would be of great benefit to further research
in ornithology and conservation, as well as commercially ...
The design of a low cost ad-hoc network for short distance data acquisition
(Stellenbosch : Stellenbosch University, 2008-12)
In this thesis the design of a low-cost ad hoc network for short distance data acquisition applications
with low data arrival intervals will be presented. The focus is on cost reduction by
replacing the traditional high ...
The experimental design and characterisation of Doherty power amplifiers
(Stellenbosch : University of Stellenbosch, 2006-12)
Modern day digital modulation techniques in communication systems produce large peak-to-average
ratios. To maintain linearity, power amplifiers have to operate at backed-off levels. This results in low
efficiency with ...
DAB implementation in SDR
(Stellenbosch : University of Stellenbosch, 2005-12)
The aim of this thesis is to implement a Digital Audio Broadcasting (DAB) system in a Software
Defined Radio (SDR). The physical modulation part of the DAB transmitter for one of the
transmission modes as well as its ...