This paper is concerned about an implementation of an accelerated domain decomposition iterative procedure. In [4], Douglas and Huang had shown the convergence for one dimensional partitioning case. This time we make an implementation to show the numerical results, and further more extend our procedure to two dimensional partitioning case. Our results show that the parameter sequence do accelerate our iterative procedure. In one dimensional partitioning case, we have the rule to choose the parameter sequence[4], but in two dimensional partitioning case, we still have no idea about the rule, but we still try to find some parameters to make our procedure more e cient. After some tests, we find that the sequence {0.4, 0.43, 0.45, 0.47, 0.5} works. Though the iteration steps in two dimensional partitioning are not decreasing, our results show the computation time is almost the same as which in the two dimensional partitioning case. It means that the parallelized program could cut down the computation cost.

Les développements technologiques en télécommunication et microondes tendent depuis plusieurs années vers la miniaturisation des circuits, une réduction des coûts, des masses et des pertes dans ces dispositifs. Les circuits SIW (Substrate Integrated Waveguide) s’inscrivent tout à fait dans cette mouvance et font à l’heure actuelle l’objet de nombreux sujets de recherche avec des applications directes dans l’industrie. Les circuits SINRD (Substrate Integrated Non Radiative Dielectric) utilisent eux les propriétés du substrat usiné (insertion de trous) pour la propagation du signal et des fonctions de l’électronique peuvent également être développées avec cette technologie. La conception de ces circuits passe généralement par des outils peu performants car non dédiés. Dans ce travail de thèse, une méthode numérique dédiée à ces circuits est développée. Elle est validée par comparaison à d’autres méthodes numériques et des mesures. Elle présente des temps de calcul très faibles. De nouveaux dispositifs pour des applications en télécommunications spatiales bas coûts et faibles pertes peuvent ainsi être développés grâce à elle. / For several years, technological developments in telecommunications and microwave circuit tend to miniaturization, low cost and mass reduction, in these devices. SIW Circuits (Substrate Integrated Waveguide) are developed in this manner and are currently the subject of numerous research topics with direct applications in industry. SINRD circuits (Substrate Integrated Non Radiative Dielectric) use micro machined substrate properties (insertion of holes) for signal propagation and electronic functions can be developed with this technology. The design of these circuits generally use unefficient tools that are not dedicated to these circuits. In this thesis, a numerical method dedicated to these circuits is developed. It is validated by comparison with other numerical methods and measurements. It presents very low computation time. New designs for applications in space communications and low-cost lowloss circuits may be developed through it.

Les développements technologiques en télécommunication et microondes tendent depuis plusieurs années vers la miniaturisation des circuits, une réduction des coûts, des masses et des pertes dans ces dispositifs. Les circuits SIW (Substrate Integrated Waveguide) s'inscrivent tout à fait dans cette mouvance et font à l'heure actuelle l'objet de nombreux sujets de recherche avec des applications directes dans l'industrie. Les circuits SINRD (Substrate Integrated Non Radiative Dielectric), utilisent eux les propriétés du substrat usiné (insertion de trous) pour la propagation du signal et des fonctions de l'électronique peuvent également être développées avec cette technologie. La conception de ces circuits passe généralement par des outils peu performants car non dédiés. Dans ce travail de thèse, une méthode numérique dédiée à ces circuits est développée. Elle est validée par comparaison à d'autres méthodes numériques et des mesures. Elle présente des temps de calcul très faibles. De nouveaux dispositifs pour des applications en télécommunications spatiales bas coût et faibles pertes peuvent ainsi être développés grâce à elle.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-01-27T12:26:54Z No. of bitstreams: 1 ValdemirPraxedesDaSilvaNeto_TESE.pdf: 4384124 bytes, checksum: ef38f7e72b8747c73ba1ab830eb12852 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-01-30T13:31:57Z (GMT) No. of bitstreams: 1 ValdemirPraxedesDaSilvaNeto_TESE.pdf: 4384124 bytes, checksum: ef38f7e72b8747c73ba1ab830eb12852 (MD5) / Made available in DSpace on 2017-01-30T13:31:57Z (GMT). No. of bitstreams: 1 ValdemirPraxedesDaSilvaNeto_TESE.pdf: 4384124 bytes, checksum: ef38f7e72b8747c73ba1ab830eb12852 (MD5) Previous issue date: 2016-04-29 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Os sistemas modernos de comunica??es demandam dispositivos com elevado desempenho de opera??o. Para o atendimento dessa demanda, torna-se essencial o desenvolvimento de novos dispositivos que sejam leves, de baixo custo, que apresentem facilidade de constru??o e capacidade de integra??o com outros circuitos que integram o sistema por completo. Desta forma, novas configura??es de circuitos integrados de micro-ondas atraem cada vez mais a aten??o dos pesquisadores, pelo bom desempenho na integra??o e prototipagem de sistemas de transmiss?o e recep??o de sinais sem fio. Este trabalho prop?e e detalha a aplica??o de uma t?cnica num?rica, constitu?da por uma formula??o de onda completa, baseada no conceito de ondas eletromagn?ticas e no princ?pio da reflex?o e transmiss?o de ondas na interface do circuito: Wave Concept Iterative Procedurte (WCIP). O m?todo Wave Concept Iterative Procedure (WCIP), ou m?todo iterativo das ondas ? apresentado como uma ferramenta com alto grau de precis?o no estudo de circuitos planares de micro-ondas. S?o propostas novas configura??es de estruturas de antenas, filtros e superf?cies seletivas de frequ?ncia. Para antenas, s?o apresentadas antenas com patch fractal aleat?rio, nas configura??es tradicionais e como monopolo. S?o realizadas an?lise da resposta em frequ?ncia dessas antenas impressas em diferentes substrato diel?tricos, dentre eles materiais t?xteis. Foram obtidos e discutidos resultados para frequ?ncia de resson?ncia, largura de banda, perda de retorno e diagrama de radia??o. Foram investigadas duas configura??es de filtros planares. Suas s?nteses e caracteriza??o da resposta em frequ?ncia foram apresentadas e realizadas por meio da aplica??o do m?todo WCIP. S?o mostrados os resultados para sua resposta em frequ?ncia. Nesta tese, s?o analisadas diferentes configura??es de FSS, tais como: FSS com elementos fractais, recongur?veis e FSS baseadas em arranjos n?o uniformes de elementos. Alguns prot?tipos dos dispositivos propostos foram constru?dos e os resultados experimentais comprovaram o modelo matem?tico apresentado. Os resultados obtidos tamb?m foram comparados com os resultados simulados pelo Ansoft HFSS, tendo sido observada uma boa concord?ncia entre eles. / The modern communications systems require devices with high operating performance. For the supply of this demand, it is essential to develop new devices that are lightweight, low cost, showing ease of construction and ability to integrate with other circuits that make up the system completely. Thus, new configurations of integrated microwave circuits increasingly attract the attention of researchers, the good performance in the integration and prototyping of transmitting and receiving wireless signals systems. This paper proposes and details the application of a numerical technique, consisting of a full-wave formulation, based on the concept of electromagnetic waves and the principle of reflection and wave transmission circuit in the interface: Wave Concept Iterative Procedure (WCIP). The method Wave Concept Iterative Procedure (WCIP) or waves iterative method is presented as a tool with high precision in planar circuits study microwave. New configurations are proposed antenna structures, filters, and frequency selective surfaces. For antennas, antennas are presented with random fractal patch in traditional settings and how monopole, response analysis are performed in frequency of such printed antennas in different dielectric substrate, including textiles. Results for resonance frequency, bandwidth, return loss and radiation pattern were obtained and discussed. Two planar filter settings were presented. Their synthesis and characterization of the frequency response were presented and carried out by applying the method WCIP. Results for its frequency response are shown. FSS different settings are presented in this thesis, such as: FSS with fractal elements, recongur?veis and FSS based on non-uniform arrangement of elements. Some prototypes of the devices proposed in this thesis were built and the experimental results showed the mathematical model presented. The results were also compared with the Ansoft HFSS simulation results, it was observed a good correlation between them. / 2019-06-21