Investigation of the electrodynamic retard devices using parallel computer systems ; Elektrodinaminių lėtinimo įtaisų tyrimas taikant lygiagrečiąsias kompiuterines sistemas
25 pages

Investigation of the electrodynamic retard devices using parallel computer systems ; Elektrodinaminių lėtinimo įtaisų tyrimas taikant lygiagrečiąsias kompiuterines sistemas

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VILNIUS GEDIMINAS TECHNICAL UNIVERSITY Raimondas POMARNACKI INVESTIGATION OF THE ELECTRODYNAMIC RETARD DEVICES USING PARALLEL COMPUTER SYSTEMS SUMMARY OF DOCTORAL DISSERTATION TECHNOLOGICAL SCIENCES, ELECTRICAL AND ELECTRONIC ENGINEERING (01T) VILNIUS 2011 Doctoral dissertation was prepared at Vilnius Gediminas Technical University in 2007–2011. Scientific Supervisor Assoc Prof Dr Vytautas URBANAVIČIUS (Vilnius Gediminas Technical University, Technological Sciences, Electrical and Electronic Engineering – 01T). The dissertation is being defended at the Council of Scientific Field of Electrical and Electronic Engineering at Vilnius Gediminas Technical University: Chairman Prof Dr Habil Romanas MARTAVIČIUS (Vilnius Gediminas Technical University, Technological Sciences, Electrical and Electronic Engineering – 01T). Members: Prof Dr Romas BARONAS (Vilnius University, Physical Sciences, Informatics – 09P), Prof Dr Egidijus KAZANAVIČIUS (Kaunas University of Technology, Technological Sciences, Information Engineering – 07T), Prof Dr Dalius NAVAKAUSKAS (Vilnius Gediminas Technical University, Technological Sciences, Electrical and Electronic Engineering – 01T), Prof Dr Habil Liudmila NICKELSON (Vilnius Gediminas Technical University, Technological Sciences, Electrical and Electronic Engineering – 01T).

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Publié le 01 janvier 2012
Nombre de lectures 27

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VILNIUS GEDIMINAS TECHNICAL UNIVERSITY
Raimondas POMARNACKI
INVESTIGATION OF THE
ELECTRODYNAMIC RETARD
DEVICES USING PARALLEL
COMPUTER SYSTEMS
SUMMARY OF DOCTORAL DISSERTATION
TECHNOLOGICAL SCIENCES,
ELECTRICAL AND ELECTRONIC ENGINEERING (01T)



VILNIUS 2011
Doctoral dissertation was prepared at Vilnius Gediminas Technical University
in 2007–2011.
Scientific Supervisor
Assoc Prof Dr Vytautas URBANAVIČIUS (Vilnius Gediminas Technical
University, Technological Sciences, Electrical and Electronic Engineering –
01T).
The dissertation is being defended at the Council of Scientific Field of
Electrical and Electronic Engineering at Vilnius Gediminas Technical
University:
Chairman
Prof Dr Habil Romanas MARTAVIČIUS (Vilnius Gediminas Technical
University, Technological Sciences, Electrical and Electronic Engineering –
01T).
Members:
Prof Dr Romas BARONAS (Vilnius University, Physical Sciences,
Informatics – 09P),
Prof Dr Egidijus KAZANAVIČIUS (Kaunas University of Technology,
Technological Sciences, Information Engineering – 07T),
Prof Dr Dalius NAVAKAUSKAS (Vilnius Gediminas Technical University,
Technological Sciences, Electrical and Electronic Engineering – 01T),
Prof Dr Habil Liudmila NICKELSON (Vilnius Gediminas Technical
University, Technological Sciences, Electrical and Electronic Engineering –
01T).
Opponents:
Prof Dr Habil Julius SKUDUTIS (Vilnius Gediminas Technical University,
Technological Sciences, Electrical and Electronic Engineering – 01T),
Prof Dr Habil Juozapas Arvydas VIRBALIS (Kaunas University of
Technology, Technological Sciences, Electrical and Electronic Engineering
– 01T).
The dissertation will be defended at the public meeting of the Council of
Scientific Field of Electrical and Electronic Engineering in the Senate Hall of
Vilnius Gediminas Technical University at 2 p. m. on 15 December 2011.
Address: Saultekio al. 11, LT-10223 Vilnius, Lithuania.
Tel.: +370 5 274 4952, +370 5 274 4956; fax +370 5 270 0112;
e-mail: doktor@vgtu.lt
The summary of the doctoral dissertation was distributed on 14 November
2011. A copy of the doctoral dissertation is available for review at the Library
of Vilnius Gediminas Technical University (Saultekio al. 14, LT-10223
Vilnius, Lithuania).
© Raimondas Pomarnacki, 2011
VILNIAUS GEDIMINO TECHNIKOS UNIVERSITETAS
Raimondas POMARNACKI
ELEKTRODINAMINIŲ LĖTINIMO
ĮTAISŲ TYRIMAS TAIKANT
LYGIAGREČIĄSIAS KOMPIUTERINES
SISTEMAS
DAKTARO DISERTACIJOS SANTRAUKA
TECHNOLOGIJOS MOKSLAI,
ELEKTROS IR ELEKTRONIKOS INŽINERIJA (01T)



VILNIUS 2011
Disertacija rengta 2007–2011 metais Vilniaus Gedimino technikos universitete.
Mokslinis vadovas
doc. dr. Vytautas URBANAVIČIUS (Vilniaus Gedimino technikos
universitetas, technologiniai mokslai, elektros ir elektronikos inžinerija –
01T).
Disertacija ginama Vilniaus Gedimino technikos universiteto Elektros ir
elektronikos inžinerijos mokslo krypties taryboje:
Pirmininkas
prof. habil. dr. Romanas MARTAVIČIUS (Vilniaus Gedimino technikos
universitetas, technologiniai mokslai, elektros ir elektronikos inžinerija –
01T).
Nariai:
prof. dr. Romas BARONAS (Vilniaus Universitetas, fiziniai mokslai,
informatika – 09P),
prof. dr. Egidijus KAZANAVIČIUS (Kauno technologijos universitetas,
technologiniai mokslai, informatikos inžinerija – 07T),
prof. dr. Dalius NAVAKAUSKAS (Vilniaus Gedimino technikos
universitetas, technologiniai mokslai, elektros ir elektronikos inžinerija –
01T),
prof. habil. dr. Liudmila NICKELSON (Vilniaus Gedimino technikos
universitetas, technologiniai mokslai, elektros ir elektronikos inžinerija –
01T).
Oponentai:
prof. habil. dr. Julius SKUDUTIS (Vilniaus Gedimino technikos
universitetas, technologiniai mokslai, elektros ir elektronikos inžinerija –
01T),
prof. habil. dr. Juozapas Arvydas VIRBALIS (Kauno technologijos
universitetas, technologiniai mokslai, elektros ir elektronikos inžinerija –
01T).
Disertacija bus ginama viešame Elektros ir elektronikos inžinerijos mokslo
krypties tarybos posdyje 2011 m. gruodžio 15 d. 14 val. Vilniaus Gedimino
technikos universiteto senato posdžių salje.
Adresas: Saultekio al. 11, LT-10223 Vilnius, Lietuva.
Tel.: (8 5) 274 4952, (8 5) 274 4956; faksas (8 5) 270 0112;
el. paštas doktor@vgtu.lt
Disertacijos santrauka išsiuntinta 2011 m. lapkričio 14 d.
Disertaciją galima peržiūrti Vilniaus Gedimino technikos universiteto
bibliotekoje (Saultekio al. 14, LT-10223 Vilnius, Lietuva).
VGTU leidyklos „Technika“ 1925-M mokslo literatūros knyga.
© Raimondas Pomarnacki, 2011
Introduction

Formulation of the Problem

An analysis using numerical methods can calculate electrical and
construction characteristics parameters of microwave devices quite accurately.
However, numerical methods require a lot of computation resources and time
for calculations to be made. Rapid perfection of the computer technologies and
software with implementation of the numerical methods has laid down the
conditions to the rapid design of the microwave devices using computers.
Currently there is much universal commercial and free software for the
modeling of the microwave devices. However, in order to analyze and design
microwave devices, it is necessary to adapt to the purposed software properties
and calculation time.

Topicality of the Research Work

In the middle of the XX c. experimental and analytic methods were used to
design the microwave devices. Whereas nowadays using numerical methods,
the analysis of the microwave devices is more accurate, and has fewer
limitations than analytical methods. However, analysis of the real devices may
take a lot of calculation time, even when the powerful computation
workstations are used.
As far as the computational techniques have advanced, there are more
possibilities to use numerical techniques to solve electromagnetic tasks, and to
develop new complex models of the microwave devices. However, sometimes
it is difficult to achieve the desired objectives with current computational
techniques. In such cases, computer clusters or special computer components,
such as multicore microprocessors and general purpose graphic units can be
used. They allow to distribute calculated tasks, and therefore have become
extremely popular.
Task distribution has been used since the first appearance of computers,
however those were special workstations, and their usage and possibilities were
quite limited. Approximately in the last decade of the XX c. technologies,
which allowed distributing tasks within personal computers, had appeared.
Consequently, such technologies made it possible to use clusters for everyone.
Nowadays, parallel computing has become very popular because only few years
ago first multicore microprocessors, general purpose graphic microprocessors,
and also, special purpose microprocessors, which have more than one core for
calculations, were manufactured.
5 Capacity and the possibilities of the computation technique have increased,
but analysis and synthesis techniques and algorithms of the microwave devices
haven’t almost changed for the last two decades. So it is appropriate to develop
complex and accurate models of the microwave devices, which can reduce the
amount of time for designing such devices. However, before implementing
models of the devices for automatic design systems the essential issue must be
solved – parallel analysis and synthesis of the electromagnetic delay devices
using parallel systems.

Research Object

The research objects – multiconductor microstrip lines (MMCL) and
meander microstrip delay lines (MMDL).

The Aim of Work

The aim of the work is to investigate the possibilities in which ways
parallel computer systems for the design of the meander microstrip delay lines
can be used, creating and investigating analysis and techniques of the
multiconductor microstrip lines structures.

Tasks of the Work

In order to achieve the aim of the work, it is necessary to:
1. Propose models of the microstrip multiconductor lines (MMCL),
which are suitable for the analysis of meander delay lines of the finite
size.
2. Create and investigate a parallel analysis technique of the meander
microstrip delay line (MMDL).
3. Create and investigate a parallel calculation technique of the MMDL
dispersion characteristics.
4. To create and investigate a parallel synthesis technique of the MMDL.

Applied Methods

The methods used in this work are as follows: finite difference numerical
method, search of the solution of the dispersion equation numerical methods
and the least squares solver.


6 Scientific Novelty

The scientific novelties of this dissertation are:
1. Proposed new MMCL models, which are suitable for the analysis of
the finite size MMDL.
2. Created and investigated a parallel analysis technique of the MMCL.
3. Created and investigated a parallel analysis technique of the MMDL
dispersion characteristics.

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