Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Humberto Cesar Chaves Fernandes"'
Autor:
Otávio Paulino Lavor, Humberto Dionisio De Andrade, Humberto Cesar Chaves Fernandes, Marinaldo Pinheiro De Sousa Neto
Publikováno v:
EQUATIONS. 1:29-33
This paper presents a new proposal of microstrip planar antennas designed for frequencies of 2.5 GHz and 700 MHz, with an improvement in bandwidth and miniaturization. Using the truncated ground plane, it is achieved a reduction of about 70% in size
Autor:
Humberto Dionísio de Andrade, Anamaria Sena Maia, Antonio Sergio Bezerra Sombra, Isaac Barros Tavares da Silva, José L. da Silva, Humberto Cesar Chaves Fernandes, Jonathan P. P. Pereira
Publikováno v:
Microwave and Optical Technology Letters. 58:2933-2937
Autor:
Humberto Dionísio de Andrade, Jonathan P. P. Pereira, Almir S. S. Neto, José L. da Silva, Idalmir de Souza Queiroz Júnior, Humberto Cesar Chaves Fernandes, Isaac Barros Tavares da Silva
Publikováno v:
Microwave and Optical Technology Letters. 57:2715-2720
This article presents an investigation about the parameters of rectangular microstrip patch antennas with resonators on the antenna's substrate, through a experimental collection, it has been observed a simulation analysis and its verification by mea
Publikováno v:
Journal of Communication and Information Systems. 30:115-118
This paper analyses the influence of microstrip antenna arrays designed for a frequency of 2.5 GHz, aiming at applications in wireless communications. From a standard antenna with circular patch, elements are introduced to obtain linear and circular
Autor:
Humberto Dionísio de Andrade, Humberto Cesar Chaves Fernandes, Jonathan P. P. Pereira, Isaac Barros Tavares da Silva, José L. da Silva
Publikováno v:
Microwave and Optical Technology Letters. 57:1326-1330
A design proposal of a microstrip patch antenna with complementary split ring resonator metamaterial type is presented, and its influence in the antenna parameters are evaluated and compared with a reference designed antenna. The agreement of simulat
Publikováno v:
Anais de XXXV Simpósio Brasileiro de Telecomunicações e Processamento de Sinais.
Autor:
Sérgio de Brito Espinola, José L. da Silva, Humberto Cesar Chaves Fernandes, João Ricardo Freire de Melo, Almir Souza e Silva Neto, Artur Luiz Torres de Oliveira
Publikováno v:
Advances in Intelligent Systems and Computing ISBN: 9783319565378
WorldCIST (2)
WorldCIST (2)
This paper presents a dual band antenna for 5G applications using a Electromagnetic Band Gap (EBG) structure in the ground plane and substrate in order to obtain an increase in bandwidth. The proposed antenna operates in the Ka-band, at 28 GHz and U-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0daa55969f6cc95391d879dc0bb220f
https://doi.org/10.1007/978-3-319-56538-5_107
https://doi.org/10.1007/978-3-319-56538-5_107
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications v.12 n.2 2013
Journal of Microwaves. Optoelectronics and Electromagnetic Applications
Sociedade Brasileira de Microondas e Optoeletrônica (SBMO)
instacron:SBMO
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Volume: 12, Issue: 2, Pages: 269-280, Published: DEC 2013
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 12, Iss 2, Pp 269-280
Journal of Microwaves. Optoelectronics and Electromagnetic Applications
Sociedade Brasileira de Microondas e Optoeletrônica (SBMO)
instacron:SBMO
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Volume: 12, Issue: 2, Pages: 269-280, Published: DEC 2013
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 12, Iss 2, Pp 269-280
The analysis and new results of the resonance frequency and radiation pattern of antennas array, for glass fiber FR-4 substrate using superconductor and copper patch, are presented. The linear superconducting rectangular antennas array uses the new m
Autor:
Humberto Dionísio de Andrade, Hugo Michel Camara de Azevedo Maia, Marinaldo Pinheiro Sousa Neto, Leonardo M. Caetano, Humberto Cesar Chaves Fernandes
Publikováno v:
Microwave and Optical Technology Letters. 55:2931-2938
Publikováno v:
Journal of Superconductivity and Novel Magnetism. 26:1805-1810
This paper presents the study and applications of EBG (Electromagnetic Band Gap)/PBG (Photonic Band Gap) substrates, of planar microstrip structures, including quadrature directional couplers, rat-race (ring coupler) and impedance transformers. Throu