Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Ruann Victor de A. Lira"'
Autor:
José Jaime G. P. Neto, Antonio Luiz P. S. Campos, Ruann Victor de A. Lira, Alfredo Gomes Neto, Maurício W. B. Silva
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 22, Iss 1, Pp 1-12 (2023)
Abstract Frequency Selective Surfaces (FSS) are increasingly being used in telecommunications systems due to the numerous advantages presented by this sort of structure, among them low cost, ease of fabrication, and low profile stand out. This work r
Externí odkaz:
https://doaj.org/article/cfc69dae1ce44a1c939bdbc41ae4c341
Autor:
Felipe Ferreira de Araújo, Antonio Luiz Pereira de Siqueira Campos, Ruann Victor de Andrade Lira, Alfredo Gomes Neto, Adaildo Gomes d'Assunção
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 20, Iss 1, Pp 105-117 (2021)
Abstract In this article, bandwidth enhancement of a microstrip patch antenna using a new kind of metasurface is discussed. This new geometry is used to generate new resonances in antenna and with an optimal position of the metasurface in relation to
Externí odkaz:
https://doaj.org/article/64ddfc806d9649a7ad3ac1cba2830860
Autor:
Tiago dos Santos Bezerra, Antonio Luiz Pereira de Siqueira Campos, Ruann Victor de Andrade Lira, Alfredo Gomes Neto
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 19, Iss 4, Pp 510-521 (2020)
Abstract In this paper, the authors present a proposal for an application of electromagnetic bandgap (EBG), for suppression of grating lobes, in frequency selective surfaces (FSS), not yet studied in the literature. An alternative type of EBG with sq
Externí odkaz:
https://doaj.org/article/55bfcb113b524f1ba9dffe483a8a55f0
Autor:
Ruann Victor de Andrade Lira, Antonio Luiz Pereira de Siqueira Campos, Alfredo Gomes Neto, Isau de Souza Silva, Alexandre Jean René Serres, Luiz Augusto Medeiros Martins Nobrega, Allan David da Costa Silva, Itaiara Félix Carvalho
Publikováno v:
Sensors and Actuators A: Physical. 348:113981
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::820c206cf5702be76c73a6d0d29390e2
https://doi.org/10.1016/j.sna.2022.113981
https://doi.org/10.1016/j.sna.2022.113981
Publikováno v:
Anais de XXXVI Simpósio Brasileiro de Telecomunicações e Processamento de Sinais.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c017230dd7ac01821fa04cf8f5d916ba
https://doi.org/10.14209/sbrt.2018.39
https://doi.org/10.14209/sbrt.2018.39
Publikováno v:
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC).
The main goal of this work is to find the required parameters for the construction of microstrip antennas, which have rectangular and circular patch. For this, an optimization technique is used, the Taguchi Method, where each parameter is defined fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21cbf18d5146a510aa8db93c010a58e7
https://doi.org/10.1109/imoc.2017.8121036
https://doi.org/10.1109/imoc.2017.8121036
Autor:
Francisco Magno Monteiro Sobrinho, Isaac Barros Tavares Da Silva, Ruann Victor de Andrade Lira, Antonio Luiz Pereira de Siqueira Campos
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 23, Iss 3 (2024)
Abstract In this article, the authors propose changes to a microwave system for measuring the relative humidity of hollow concrete blocks presented in the literature, aiming to improve the system’s sensitivity. The operating frequency range was cha
Externí odkaz:
https://doaj.org/article/a7387b316ae842ecacaabea382bbd721