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Electrical and Computer Engineering

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Technological University Dublin

2005

Articles 31 - 37 of 37

Full-Text Articles in Engineering

Printed Triband Terminal Antenna, Matthias John, Max Ammann, R. Farrell Jan 2005

Printed Triband Terminal Antenna, Matthias John, Max Ammann, R. Farrell

Articles

This paper presents a printed triple-band multibranch monopole for use in modern wireless systems. The antenna is designed to operate in three bands which cover virtually all wireless channels. Parameters of the antenna geometry are varied and the effects of these variations on the impedance bandwidth are shown.

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A New Architecture For A Multi Polarized Perpendicularly-Fed Radiating Element, Naftali Herscovici, Francisco Lerma, Max Ammann Jan 2005

A New Architecture For A Multi Polarized Perpendicularly-Fed Radiating Element, Naftali Herscovici, Francisco Lerma, Max Ammann

Conference papers

Planar printed antennas are often required to be fed by parallel feed-networks, which, when printed on the same substrate as the radiating elements, create mutual coupling, spurious radiation and excite surface waves. This considerably affects the array efficiency. Numerous architectures were proposed in the past; some of them use the multilayer structure (which by itself exhibits low efficiency), or perpendicularly fed structures. The latter consist of a substrate for the radiating element and another substrate which for the feed-network. The paper reviews some of the basic configurations proposed until now, and shows the specific improvements introduced by the proposed architecture.

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Pid Control: The Early Years, Aidan O'Dwyer Jan 2005

Pid Control: The Early Years, Aidan O'Dwyer

Conference papers

This contribution outlines controller developments 1788 – c.1900; 1900-1950: The role of instrument companies; early theoretical description of the PID controller; early tuning of the PID controller; some further developments since 1950; some conclusions.

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Design Of A Wireless System For Patient-Hospital Communciation And Result Validation In Point Of Care Testing, John Mcgrory, Owen Lynch, Eugene Coyle Jan 2005

Design Of A Wireless System For Patient-Hospital Communciation And Result Validation In Point Of Care Testing, John Mcgrory, Owen Lynch, Eugene Coyle

Conference papers

This paper discuses mobile phone (cell phone) and wireless applications for linking patients who manage their healthcare outside the hospital using point of care testing (POCT) to hospital information systems (HIS). Certain medical conditions require patients to manage their healthcare by performing on themselves POC testing and act faithfully on the result. This raises quality control issue, as these POC samples and testing procedures are not independently overseen by professional hospital staff. In hospitals, samples taken by clinicians are validated by hi-tech computerised validation systems to ensure plausibility, before physicians rely on them. Patients in the home must often use …

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An Explicit Mapping Between The Frequency Domain And The Time Domain Representations Of Nonlinear Systems, Marissa Condon, Rossen Ivanov Jan 2005

An Explicit Mapping Between The Frequency Domain And The Time Domain Representations Of Nonlinear Systems, Marissa Condon, Rossen Ivanov

Articles

Explicit expressions are presented that describe the input-output behaviour of a nonlinear system in both the frequency and the time domain. The expressions are based on a set of coefficients that do not depend on the input to the system and are universal for a given system. The anharmonic oscillator is chosen as an example and is discussed for different choices of its physical parameters. It is shown that the typical approach for the determination of the Volterra Series representation is not valid for the important case when the nonlinear system exhibits oscillatory behaviour and the input has a pole …

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Maintaining A Balance At Undergraduate Degree Level In The Teaching Of Automation And Classical Control Systems, Eugene Coyle, Aidan O'Dwyer Jan 2005

Maintaining A Balance At Undergraduate Degree Level In The Teaching Of Automation And Classical Control Systems, Eugene Coyle, Aidan O'Dwyer

Conference papers

Advances in the past decade in the development and application of Programmable Logic Controllers (PLCs) and Automation Systems in both high technology industrial plants and in the more mainstream manufacturing sectors, has heightened the importance of ensuring that undergraduate degree programme syllabi are designed to adequately cater for the teaching and training of students in automation. Prior to this growth in automation, delivered syllabi in Control Systems on most Electrical Engineering programmes had a theoretical rigour, reflecting the mathematical nature of the topic. A major challenge currently facing departmental lecturing staff and programme coordinators is that of the design of …

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Learning Games Programming With Dalek World., Bryan Duggan, Hugh Mcatamney, Fredrick Mtenzi Jan 2005

Learning Games Programming With Dalek World., Bryan Duggan, Hugh Mcatamney, Fredrick Mtenzi

Conference papers

From September 2005 the School of Computing in the DIT will offer an elective in computer games programming to final year computer science students. This paper demonstrates how students will learn games programming by developing a 3D FPS (First Person Shooter) called Dalek World. Dalek World is developed using Microsoft Visual Studio in C++ and was originally developed by the authors to learn games programming techniques themselves. In developing Dalek World, students will learn Euclidian geometry, 3D graphics programming, object orientated game design, level loading, physics, collision detection, the A* algorithm, perception and enemy AI using finite state machines.

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