Výsledky vyhledávání - "T. M. Goncalves"

A New Strategy for Optimizing HSIL Transmission Lines

Autor: Sandro T. M. Goncalves, André Luiz Paganotti, Marcio Matias Afonso, Isabella Abrão Marques Duane, Marco Aurélio O. Schroeder, Rodney R. Saldanha

Publikováno v: Journal of Control, Automation and Electrical Systems. 31:1288-1297

This paper presents an efficient procedure for optimizing the electric field at ground level of high surge impedance loading transmission lines. Such lines have the capacity to achieve higher power transmission rates than the conventional ones. The e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5380e77dcfe1da5341dada1b48ff2dc6
https://doi.org/10.1007/s40313-020-00628-2

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Wideband performance limitations of the C-FDTD in the discretization impoverishment of a curved surface

Autor: Lucas L. L. Fortes, Sandro T. M. Goncalves

Publikováno v: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering. 39:1005-1015

Purpose This paper aims to explore the limitations of the conformal finite difference time-domain method (C-FDTD or Dey–Mittra) when modeling perfect electric conducting (PEC) and lossless dielectric curved surfaces in coarse meshes. The C-FDTD is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3e4541430e57eef30d8741553bb381d1
https://doi.org/10.1108/compel-01-2020-0048

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Charge correction formulation on the staircase edges and effective length of inclined wires in FDTD mesh

Autor: Tarcísio Carlos Fonseca, Sandro T. M. Goncalves, Glaucio Lopes Ramos, Cassio G. Rego

Publikováno v: IET Microwaves, Antennas & Propagation. 14:768-773

This work presents improvements for inclined thin wire simulation in finite-difference time-domain (FDTD). Modelling of the corners of staircase geometries is proposed by adding the accumulated charges at an edge region. This correction is important

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::08fd3ba793829b783f8c4dffde903041
https://doi.org/10.1049/iet-map.2019.0249

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Analysis and Optimization of Ultra-Low-Power Rectifier with High Efficiency for Applications in Wireless Power Transmission and Energy Harvesting

Autor: Christian Vollaire, Glaucio Lopes Ramos, Raphaella Luiza Resende da Silva, Sandro T. M. Goncalves, Arnaud Bréard, Cassio G. Rego

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 19, Iss 1, Pp 60-85 (2020)
Journal of Microwaves, Optoelectronics and Electromagnetic Applications v.19 n.1 2020
Journal of Microwaves. Optoelectronics and Electromagnetic Applications
Sociedade Brasileira de Microondas e Optoeletrônica (SBMO)
instacron:SBMO
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Volume: 19, Issue: 1, Pages: 60-85, Published: 16 MAR 2020

The system capable of harvesting RF energy from the environment through an antenna and converting it into direct current energy to deliver to a load is known as rectenna. The rectifier circuit is an important part of the rectenna and its modeling is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcc29f0baee91d27efa7ecad51abbd08
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742020000100060&tlng=en

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Measurement and Prediction of Short-Range Path Loss between 27 and 40 GHz in University Campus Scenarios

Autor: Sandro T. M. Goncalves, Luiz da Silva Mello, Carlos Eduardo Orihuela Vargas, Paulo Tibúrcio Pereira, Glaucio Lopes Ramos, Cassio G. Rego, Robson D. Vieira

In this paper, we present the results of short-range path loss measurements in the microwave and millimetre wave bands, at frequencies between 27 and 40 GHz, obtained in a campaign inside a university campus in Rio de Janeiro, Brazil. Existing empiri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3c34056139cdeaf7f3800b30dcffd58a
https://doi.org/10.21203/rs.3.rs-70739/v1

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Multiple Screen Diffraction Analysis Using the Parabolic Equation Technique

Autor: Diego Tami, Elson J. Silva, Paulo Tibúrcio Pereira, Glaucio Lopes Ramos, Sandro T. M. Goncalves, Pablo R. de Andrade

Publikováno v: 2020 14th European Conference on Antennas and Propagation (EuCAP).

This paper presents preliminary results about multiple screen diffraction loss obtained using the parabolic equation technique. The numerical simulation is compared with a measurement campaign performed at microwave frequencies. The main contribution

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4387e9121e63efd113e07f416b735bc0
https://doi.org/10.23919/eucap48036.2020.9135843

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High Efficiency Double-band Printed Rectenna Model for Energy Harvesting

Autor: Glaucio Lopes Ramos, Rakelane A. Mendes, Raphaella Luiza Resende da Silva, Cassio G. Rego, Sandro T. M. Goncalves, Icaro V. Soares

Publikováno v: 2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC).

This paper presents a wireless energy harvesting device formed by a meandered printed dipole antenna, which is resonant in the frequency bands Global System for Mobile Communication (GSM), Long Term Evolution (LTE) and Instrumentation, Scientific and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::10bba7b62150c4d942baa43ecdd96b4f
https://doi.org/10.1109/imoc43827.2019.9317673

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Projeto experimental de colaboração entre a produção audiovisual do TCE-PB e de estudantes da rede pública

Autor: Rafael M. Toscano, Fábia Carolino, Helder Bruno A. M. de Souza, Valdecir Becker, Sandro T. M. Goncalves, Raoni Kulesza

Publikováno v: Anais Estendidos do Simpósio Brasileiro de Sistemas Multimídia e Web (WebMedia).

This paper describes an experimental videocolaboration project that integrates productions of institutional videos from the Court of Auditors of the State of Paraíba (TCE-PB) to non-professional production provided by public school students. Public

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::23b6a8c28ae1806d62262fe6f017d6cf
https://doi.org/10.5753/webmedia_estendido.2019.8156

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Analysis of High-efficiency Rectenna models at 2.45 GHz using Meandered Printed Dipole Antenna

Autor: Glaucio Lopes Ramos, Raphaella Luiza Resende da Silva, Rakelane A. Mendes, Sandro T. M. Goncalves, Cassio G. Rego

Publikováno v: 2019 19th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering (ISEF).

This paper presents two models of high efficiency rectennas, resonant in the frequency of 2.45 GHz, which input power is -15 dBm. In the models it was used the same kinds of antennas and rectifier circuits that have been manufactured on FR4 substrate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e1ae25be0829ab56e5859160e8054001
https://doi.org/10.1109/isef45929.2019.9097081

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