Výsledky vyhledávání - "Rafael Abrantes Penchel"

Akademický článek

Scenarios for Ecodesign in loudspeaker’s motor

Autor: Allan Di Cunto D’Avila de Almeida, Ivan Aritz Aldaya Garde, Mirian Paula dos Santos, Rafael Abrantes Penchel, Lúcio Cardozo Filho, José Augusto de Oliveira

Publikováno v: Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022)

Abstract The worldwide loudspeaker market follows the growing tendency of electronic entertainment technologies both in quantity and variety. Consequently, the environmental impacts caused during the life cycle of loudspeakers increase in the same pr

Externí odkaz: https://doaj.org/article/a262638fc370480ca0564293d35f5a1b

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Akademický článek

Effect of Beam-Steering Angle, Operation Wavelength and Mean Inter-Element Distance on the Side-Lobe Levels of Integrated Optical Phased Arrays under Beam-Steering Operation

Autor: Ivan Aldaya, Bruna Dias Pires de Souza, Rafael Abrantes Penchel, Julian Leonel Pita, Mirian Paula dos Santos, José Augusto de Oliveira, Marcelo Luis Francisco Abbade

Publikováno v: Photonics, Vol 10, Iss 12, p 1300 (2023)

Integrated optical phased arrays (OPAs) play an important role in a broad range of applications. Fabrication constraints, however, pose a limit to the minimum inter-element separation that further results in high-intensity side lobes. The intensity o

Externí odkaz: https://doaj.org/article/ae01ef94259b48c2b048b77c0028c51d

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Akademický článek

Analysis of Cleaner Production Performance in Manufacturing Companies Employing Artificial Neural Networks

Autor: Rafael Abrantes Penchel, Ivan Aldaya, Lucas Marim, Mirian Paula dos Santos, Lucio Cardozo-Filho, Veeriah Jegatheesan, José Augusto de Oliveira

Publikováno v: Applied Sciences, Vol 13, Iss 6, p 4029 (2023)

Cleaner production has emerged as a comprehensive paradigm, aiming to reduce, or even avoid, the environmental impact in the production stage, in a broad variety of fields. However, the great number of interacting factors makes the assessment of effi

Externí odkaz: https://doaj.org/article/5bb83ceab1084b3a8028507042a63104

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[en] SYNTHESIS OF OFFSET REFLECTOR ANTENNAS USING CONIC SECTIONS AND CONFOCAL QUADRIC SURFACES

Autor: RAFAEL ABRANTES PENCHEL

[pt] O presente trabalho propõe técnicas numéricas para a síntese de antenas refletoras que utilizando seções de cônicas ou superfícies quádricas confocais. Para tal, utilizando os princípios da Óptica Geométrica, foram desenvolvidos algo

Externí odkaz: https://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=24631@1
https://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=24631@2

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Dissertation/ Thesis

Synthesis of Offset Reflector Antennas Using Conic Sections and Confocal Quadric Surfaces

Autor: RAFAEL ABRANTES PENCHEL

Publikováno v: Repositório Institucional da PUC_RIOPontifícia Universidade Católica do Rio de JaneiroPUC_RIO.

PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
O presente trabalho propõe técnicas numéricas para

Externí odkaz: http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=24631@1
http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=24631@2

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Dissertation/ Thesis

Modelagem geométrica de antenas duplo-refletoras para cobertura omnidirecional

Autor: Rafael Abrantes Penchel

Publikováno v: Biblioteca Digital de Teses e Dissertações da UFMGUniversidade Federal de Minas GeraisUFMG.

Based on Geometrical Optics (GO) principles, this work presents a computational tool for the synthesis of dual reflector antennas for omnidirectional coverage. Initially, the algorithm synthesizes one of four omnidirectional classical dual reflector

Externí odkaz: http://hdl.handle.net/1843/BUOS-8D3JZL

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