Zobrazeno 1 - 10
of 25
pro vyhledávání: '"M.A.B. de Melo"'
Publikováno v:
2009 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC).
In this paper is presented a resonant type wire antenna of the compact size, it was implemented using a composite right/left-handed transmission line. The array of three antennas can be used as isotropic sensor. It was built with the junction of thre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::684f3d32d146809571162dd3b2c10d72
https://doi.org/10.1109/imoc.2009.5427480
https://doi.org/10.1109/imoc.2009.5427480
Publikováno v:
2008 IEEE International Conference on Ultra-Wideband.
In this paper a compact ultra-wideband antenna for applications in UWB systems is proposed. Its main characteristic is to present quasi-isotropic radiation patterns into the three main plans (xy, xz and zy). The proposed antenna can be viewed as deri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4755f3053f3e9873b006acb6745979fe
https://doi.org/10.1109/icuwb.2008.4653446
https://doi.org/10.1109/icuwb.2008.4653446
Publikováno v:
SBMO/IEEE MTT-S International Conference on Microwave and Optoelectronics, 2005..
In this paper genetic algorithms were used in order to synthesize dielectric multilayer and symmetric passive structures with plane interfaces, considering TEM waves with normal and oblique incidences. The genetic algorithm optimization objective is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::346f0f045588147cb11c31bf43b75b23
https://doi.org/10.1109/imoc.2005.1580130
https://doi.org/10.1109/imoc.2005.1580130
Publikováno v:
SBMO/IEEE MTT-S International Conference on Microwave and Optoelectronics, 2005..
The theoretical propagation models founded in literature are compared with measured data with the goal of characterizing areas in Joao Pessoa, Brazil. The complex behavior of the fading and multipath phenomena in mobile communication systems are gene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc76000916333b5677de3dcc9df755ef
https://doi.org/10.1109/imoc.2005.1580001
https://doi.org/10.1109/imoc.2005.1580001
Publikováno v:
Scopus-Elsevier
In this paper, genetic algorithms were used in order to synthesize dielectric multilayer shields with symmetric structures and plane interfaces considering TEM waves with normal and oblique incidences. The genetic algorithm optimization objective is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f45ef878a2418c79121a9d741dc4c68
https://doi.org/10.1109/imtc.2005.1604587
https://doi.org/10.1109/imtc.2005.1604587
Autor:
G. Fontgalland, M. G. G. Neri, R. R. M. do Valle, J.M.B. Bezerra, E. M. Silva, M.A.B. de Melo
Publikováno v:
2004 10th International Symposium on Antenna Technology and Applied Electromagnetics and URSI Conference.
This paper presents the preliminary results of our investigation into the measurement of the spectrum generated by insulator under activity up to 31.6KV in normal weather conditions and artificial pollution. We use the classical antenna measurement t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2447ebdd0fc54b271b2d911ac887547
https://doi.org/10.1109/antem.2004.7860612
https://doi.org/10.1109/antem.2004.7860612
Publikováno v:
Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678).
This work presents a new technique for analyzing microwave waveguide with electromagnetic bandgap (EBG) structures. Two types of waveguides, the rectangular waveguide and parallel plate waveguide, were modeled by neurocomputacional technique. The fir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::195950288f4e0770781c8e7d89153c3c
https://doi.org/10.1109/imoc.2003.1244860
https://doi.org/10.1109/imoc.2003.1244860
Publikováno v:
Proceedings of the 2002 International Joint Conference on Neural Networks. IJCNN'02 (Cat. No.02CH37290).
This paper describes the applications of multilayer perceptrons for GaAs device and integrated circuit modeling, that were proposed to improve circuit simulation programs like SPICE. The obtained results by the MESFET logic gate circuit simulations p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb61ac2cf00efddc046a98aab0e65733
https://doi.org/10.1109/ijcnn.2002.1007497
https://doi.org/10.1109/ijcnn.2002.1007497
Publikováno v:
Proceedings of the 2001 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference. (Cat. No.01TH8568).
Programs for circuit simulation, involving nonlinear device models are very important to obtain fast and accurate results. In general, the model complexity limits the simulation level. In the last few years, nonlinear device models based in artificia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89e9a3a1d654080bbd6265f4ba5736af
https://doi.org/10.1109/sbmomo.2001.1008718
https://doi.org/10.1109/sbmomo.2001.1008718
Publikováno v:
Proceedings of the 2001 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference. (Cat. No.01TH8568).
A full-wave analysis for the problem of scattering from a frequency selective surface (FSS) comprised of periodic arrays of thin dipoles on an anisotropic layer is presented. The formulation is carried out in the spectral domain where the convolution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff0f8afd25d08fd743c395cf58ec5048
https://doi.org/10.1109/sbmomo.2001.1008794
https://doi.org/10.1109/sbmomo.2001.1008794