Browsing Doctoral Degrees (Electronic Engineering) by Issue Date
Now showing items 1-20 of 58
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The Design of high-voltage planar transistors with specific reference to the collector region.
(1984)The thesis represents a major contribution to the understanding of the design and fabrication of high-voltage planar silicon bipolar transistors, and reports on the original research carried out and the special methods ... -
Travelling-wave frequency conversion.
(1985)Travelling-wave distributed amplifiers are providing gain over broad frequency ranges for microwave applications. Similar concepts are applicable to distributed mixers and, with the use of controlled feedback, to a ... -
An Analytic model for high electron mobility transistors.
(1986)The last six years has seen the emergence and rapid development of a new type of field effect transistor, the High Electron Mobility Transistor (HEMT), which offers improved performance in both digital and analogue circuits ... -
An adaptive protocol for use over meteor scatter channels.
(1987)Modem technology has revived interest in the once popular area of meteor scatter communications. Meteor scatter systems offer reliable communications in the 500 to 2000 km range all day, every day. Recent advances in ... -
A CAD tool for the prediction of VLSI interconnect reliability.
(1988)This thesis proposes a new approach to the design of reliable VLSI interconnects, based on predictive failure models embedded in a software tool for reliability analysis. A method for predicting the failure rate of ... -
Modelling and testing microwave magnetrons.
(1988)Though declining in popularity over the last decade, the magnetron still has applications where portable high power is needed. This study examines the predicted performance of cylindrical microwave magnetrons using ... -
A proportional timing generator for measuring intermodulation product distortion on television transposers.
(1989)Broadcasting authorities presently measure intermodulation distortion by applying a three tone simulation of a composite video and sound signal to the transposer and then measuring the relative amplitude of the major ... -
Predicted and measured arrival rates of meteors over forward-scatter links.
(1991)Investigations into currently accepted methods of modelling variations in the arrival rate of meteors over forward-scatter meteor links have revealed some shortcomings. In these investigations, particular emphasis is ... -
Optimized digital signal processing algorithms applied to radio communications.
(1992)The application of digital signal processing to radio communications has come of age with the advent of low power, high speed microprocessors and over the past five years, various transceiver architectures, utilizing ... -
Computer-aided design of RF MOSFET power amplifiers.
(1992)The process of designing high power RF amplifiers has in the past relied heavily on measurements, in conjunction with simple linear theory. With the advent of the harmonic balance method and increasingly faster computers, ... -
Neural networks and early fast Doppler for prediction in meteor-burst communications systems.
(1994)In meteor-burst communications systems, the channel is bursty with a continuously fluctuating signal-to-noise ratio. Adaptive data rate systems attempt to use the channel more optimally by varying the bit rate. Current ... -
The development of an experimental, low profile, broadband travelling wave tube amplifier.
(1994)An experimental, field replaceable travelling wave tube (TWT) with low profile, TEM transitions has been developed with the aim of combining the cost advantages of field replaceable TWTs with the bandwidth advantages of ... -
The analysis, simulation and testing of an experimental travelling- wave tube.
(1994)As a design and analysis aid for the development of an experimental TWT, a computer program is written which allows the small-signal gain to be computed for various operating conditions, such as various conditions of ... -
Protocols for voice/data integration in a CDMA packet radio network.
(1999)Wireless cellular communications is witnessing a rapid growth in, and demand for, improved technology and range of information types and services. Future third generation cellular networks are expected to provide mobile ... -
Performance analysis of signalling system No. 7 networks during signalling transfer point congestion.
(2002)The growth of mobile networks and the imminent deployment of third generation networks and services will require signalling networks to maintain their integrity during increased unanticipated traffic volumes. As signalling ... -
A MAC protocol for wireless networks with QoS guarantees.
(2002)Mobile communications are becoming integrated into society at an explosive rate. While 2nd generation (2G) systems limit the user to basic services such as voice and low-bit rate data, 3G networks are characterized by ... -
Constant modulus based blind adaptive multiuser detection.
(2004)Signal processing techniques such as multi user detection (MUD) have the capability of greatly enhancing the performance and capacity of future generation wireless communications systems. Blind adaptive MUD's have many ... -
Combined turbo coding and interference rejection for DS-CDMA.
(2004)This dissertation presents interference cancellation techniques for both the Forward Error Correction (FEC) coded and the uncoded Direct Sequence Code Division Multiple Access (DS-CDMA) systems. Analytical models are ... -
Multiple antenna systems : channel capacity and low-density parity-check codes.
(2005)The demand for high data rate wireless communication systems is evident today as indicated by the rapid growth in wireless subscribers and services. High data rate systems are bandwidth intensive but bandwidth is an expensive ... -
Residue number system coded differential space-time-frequency coding.
(2007)The rapidly growing need for fast and reliable transmission over a wireless channel motivates the development of communication systems that can support high data rates at low complexity. Achieving reliable communication ...