Mode Matching Technique
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Mobility impact and methods of diaphragm monitoring in patients with chronic obstructive pulmonary disease: a systematic review
The objectives of the study were to identify the factors that limit diaphragmatic mobility and evaluate the therapeutic results of the monitoring methods previously used in patients with chronic obstructive pulmonary disease. The PubMed, Web of Science, Scopus, and LILACS databases were used. A gray literature search was conducted with Google scholar. PRISMA
Clinics. Publicado em: 10/01/2020
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2. A Numerical Mode-Matching Method Based on Multiple-Knot Cubic B-Splines Applied to the Analysis of Well-Logging Tools
Abstract The numerical mode-matching (NMM) technique is a very efficient approach to analyze well-logging tools used for hydrocarbon exploration. This problem is typically modeled as a cylindrically layered medium (subterranean formation) including both horizontal and vertical stratifications. In this paper, we present a new NMM formulation based on the use
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-09
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3. Pseudo-Analytical Modeling of Tilted-Coil Antennas in Anisotropic Geophysical Formations
Abstract In this paper we present an efficient mode-matching technique to analyze tilted-coil antennas in anisotropic geophysical formations. In this problem, a number of coil antennas with arbitrary relative tilt angle with respect to the symmetry axis are used to radiate electromagnetic fields in a cylindrically layered medium comprised of a metallic mandr
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-03
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4. Conversor CC/CA de alta freqüência baseado em inversores ressonantes com comutação seqüencial para excitação de uma tocha indutiva a plasma térmico
This work describes the study, the analysis, the project methodology and the constructive details of a high frequency DC/AC resonant series converter using sequential commutation techniques for the excitation of an inductive coupled thermal plasma torch. The aim of this thesis is to show the new modulation technique potentialities and to present a technologi
Publicado em: 2010
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5. Cinema e industria: o conceito de modo de produção cinematográfico e o cinema brasileiro / Cinema e industria: o conceito de modo de produção cinematográfico e o cinema brasileiro
This thesis discusses the historiography of Film History. Film History has produced a set of material that, generally, takes as starting point the films themselves and do not consider extra text material, such as the economy and the reception of the film. This work attempts, through the concept of mode of production, bridge under a conceptual apparatus match
Publicado em: 2007
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6. APPLICATION OF MODE MATCHING TECHNIQUE IN THE ANALYSIS AND PROJECT OF COAXIAL STRUCTURES / APLICAÇÃO DO MÉTODO DO CASAMENTO DE MODOS NA ANÁLISE E NO PROJETO DE ESTRUTURAS COAXIAIS
Neste presente trabalho, o Método do Casamento de Modos é aplicado na análise e no projeto de estruturas coaxiais. A estrutura de excitação é um dos pontos críticos do projeto de antenas do tipo discone quando se pretende explorar suas características de banda larga. Seções não uniformes de guias de ondas coaxiais são usualmente utilizadas como e
Publicado em: 2005
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7. ARBITRARY CROSS SECTION WAVEGUIDES: ANALYSIS OF MODAL FIELDS AND OF DISCONTINUITIES BETWEEN ARBITRARY CROSS SECTION WAVEGUIDES / GUIAS DE ONDA DE SEÇÃO ARBITRÁRIA: ANÁLISE DE CAMPOS MODAIS E DE DESCONTINUIDADES EM GUIAS DE DIFERENTES SEÇÕES
In the present work, the modal fields and cutoff wavenumbers of arbitrary cross section waveguides are determined using the Rayleigh-Ritz method. Initially, the method is applied to waveguides with cross section approximated by a convex polygon. Polynomial basis functions are used. Such basis functions limit the number of modes that can be computed, since po
Publicado em: 2003
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8. Desaceleração de um feixe atomico de Ca com laser de diodo de frequencia dobrada
This work presents the results of a calcium atomic bean deceleration using a frequency-doubled diode laser. The diode laser produces single-mode output power of 150 mW at a maximum injection current of 160 mA. The nonlinear crystal used for second harmonic generation is the KnbO3 by noncritical and type I phase matching process. For l =845 nm the phase match
Publicado em: 1998