Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Paulo Tibúrcio Pereira"'
Publikováno v:
2020 International Conference on Innovation and Intelligence for Informatics, Computing and Technologies (3ICT).
This article aims to present a study on a model of radiofrequency signal attenuation in areas covered by vegetation (trees) using the Kriging technique, to be applied to the Fifth Generation (5G) of cellular telephony. For the processing of the model
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
https://doi.org/10.21203/rs.3.rs-70739/v1
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
Publikováno v:
2020 14th European Conference on Antennas and Propagation (EuCAP).
This paper presents preliminary results about path loss prediction in vegetation using the parabolic equation technique. The trees were modelled in a flat and a triangular format and their effect in the path loss was analysed. A real measurement scen
Autor:
Mateus H. B. Rezende, Paulo Tibúrcio Pereira, Glaucio Lopes Ramos, Leonardo R. A. X. Menezes, Alexandre J. F. Loureiro
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 17, Iss 2, Pp 284-297
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Volume: 17, Issue: 2, Pages: 284-297, Published: JUN 2018
Journal of Microwaves, Optoelectronics and Electromagnetic Applications v.17 n.2 2018
Journal of Microwaves. Optoelectronics and Electromagnetic Applications
Sociedade Brasileira de Microondas e Optoeletrônica (SBMO)
instacron:SBMO
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Volume: 17, Issue: 2, Pages: 284-297, Published: JUN 2018
Journal of Microwaves, Optoelectronics and Electromagnetic Applications v.17 n.2 2018
Journal of Microwaves. Optoelectronics and Electromagnetic Applications
Sociedade Brasileira de Microondas e Optoeletrônica (SBMO)
instacron:SBMO
Vegetation is considered a complex environment for analysis of scattering and attenuation in radio propagation phenomena. Satellite image processing can improve planning of radio systems with a vegetation attenuation predictor. In this research, the
A novel FDTD/WP-PML/NUFFT algorithm applied to the design of a printed metamaterial enhanced antenna
Autor:
Ivan R. S. Casella, Paulo Tibúrcio Pereira, Humberto Xavier de Araujo, Cassio G. Rego, Glaucio Lopes Ramos, Carlos Eduardo Capovilla
Publikováno v:
AEU - International Journal of Electronics and Communications. 70:1187-1191
This paper presents the results for a FDTD/WP-PML/NUFFT algorithm developed to design and analyze printed antennas. To show the applicability of the developed code, a new metamaterial printed antenna array is designed for the S-Band operation. Result
Publikováno v:
Linköping Electronic Conference Proceedings.
Autor:
Alexandre J. F. Loureiro, C. Goncalves do Rego, M.H. Batista de Rezende, Paulo Tibúrcio Pereira, G. Lopes Ramos, R. Domingos Vieira
Publikováno v:
12th European Conference on Antennas and Propagation (EuCAP 2018).
Autor:
Glaucio Lopes Ramos, Cassio G. Rego, Elson J. Silva, Gilberto Medeiros Ribeiro, Ursula C. Resende, Mateus H. B. Rezende, Paulo Tibúrcio Pereira
Publikováno v:
2017 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC).
This paper presents a 18 GHz cm-Wave measurement-based campaign and path-loss analysis and a comparison with the traditional Alpha-Beta (AB) and the Close-in (CI) propagation models. A suburban scenario in the city of Belo Horizonte, Minas Gerais, Br
Autor:
Glaucio Lopes Ramos, Carlos Eduardo Capovilla, Humberto Xavier de Araujo, Paulo Tibúrcio Pereira, Cassio G. Rego
Publikováno v:
2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC).
In this paper Capacitively-Loaded Loop (CLL) metamaterial structures are applied to a Bi-Yagi antenna in order to improve its overall performance. Preliminary results show that the new antenna can be designed with an improvement of 13.48 dB on the re