Výsledky vyhledávání - "B. M. Fabiani"

Akademický článek

Performance Analysis of Probe-Fed Circularly-Polarized Moderately-Thick Microstrip Antennas Designed under the Null Reactance Condition

Autor: D. C. Nascimento, B. M. Fabiani, J. C. S. Lacava

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 17, Iss 1, Pp 1-9

Abstract This work presents a performance analysis of probe-fed circularly-polarized moderately-thick microstrip patch antennas. Five typical geometries are designed according to the null reactance condition. A nonlinear regression, based on HFSS sim

Externí odkaz: https://doaj.org/article/655290f0bb1144689423461b47028ee2

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Alternative Formulation of Antenna Arrays for DF Systems Considering Active-Element Patterns and Scattering Matrices

Autor: E. S. Silveira, Daniel C. Nascimento, Marcelo Pinho, Eduardo S. Sakomura, D. B. Ferreira, B. M. Fabiani

Publikováno v: Sensors
Volume 21
Issue 15
Sensors (Basel, Switzerland)
Sensors, Vol 21, Iss 5048, p 5048 (2021)

Direction finding (DF) systems are used to determine the direction-of-arrival (DoA) of electromagnetic waves, thus allowing for the tracking of RF sources. In this paper, we present an alternative formulation of antenna arrays for modeling DF systems

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3095d42a73a4f0ac18666834ac79470

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Polarization reconfigurable microstrip phased array

Autor: B. M. Fabiani, Marcus Vinicius Pera de Pina, E. S. Silveira, Daniel C. Nascimento

Publikováno v: AEU - International Journal of Electronics and Communications. 97:220-228

In this paper, the design and the experimental validation of a polarization reconfigurable microstrip phased array is presented. The reconfigurability between the right-handed (RHCP) and left-handed (LHCP) circular polarization is achieved using elec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::012e13d99605f485931d62afdc0fee94
https://doi.org/10.1016/j.aeue.2018.10.023

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Nonlinear Constrained Beamforming Algorithm for Circularly Polarized Phased Arrays

Autor: Daniel C. Nascimento, Marcus Vinicius Pera de Pina, B. M. Fabiani, E. S. Silveira

Publikováno v: IEEE Antennas and Wireless Propagation Letters. 17:1692-1696

In this letter, a beamforming algorithm based on least-squares problem subjected to nonlinear constraints is proposed. The formulation allows the main beam direction, polarization, sidelobe level, and nulls positioning control. For validating the alg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::057365f30a9c493306940f809082bf2b
https://doi.org/10.1109/lawp.2018.2863544

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Calibration procedures for microwave vector comparators

Autor: Eduardo S. Sakomura, Juner Vieira, F.F. Oliveira, B. M. Fabiani, D. B. Ferreira, I. Bianchi, Daniel C. Nascimento, E. S. Silveira

Publikováno v: Sensors and Actuators A: Physical. 331:112955

This paper presents two calibration procedures for microwave vector comparators. The first is intended for architectures composed of a quadrature demodulator. It assumes that the output voltages of this component are expressed as cosine and sine func

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e47feb52afdec9bacf9db3b03cdce05a
https://doi.org/10.1016/j.sna.2021.112955

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Data Acquisition Circuit for Identification of RF Signals’ Direction of Arrival

Autor: B. M. Fabiani, Tarcisio A. B. Gripp, E. S. Silveira, D. C. Nacimento

Publikováno v: 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting.

This paper presents the design, manufacture and tests of a front-end circuit for a Direction Finding (DF) system. The front-end circuit is composed of low noise amplifiers (LNA), multiplexers for selection of the signals received from an antenna arra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a73a2d5246e24ccb7c058b316a1cef68
https://doi.org/10.1109/apusncursinrsm.2019.8888315

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Performance Analysis of Probe-Fed Circularly-Polarized Moderately-Thick Microstrip Antennas Designed under the Null Reactance Condition

Autor: Daniel C. Nascimento, B. M. Fabiani, JosÃ© Carlos da Silva Lacava

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications v.17 n.1 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: 1, Pages: 1-9, Published: MAR 2018
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 17, Iss 1, Pp 1-9

This work presents a performance analysis of probe-fed circularly-polarized moderately-thick microstrip patch antennas. Five typical geometries are designed according to the null reactance condition. A nonlinear regression, based on HFSS simulations,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08458572e292d1deafef2651e37dfd2f
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742018000100001

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Design of a microstrip antenna array with polarization diversity for DoA application

Autor: Daniel C. Nascimento, B. M. Fabiani, T. A. de B. Gripp, E. S. Silveira

Publikováno v: 2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC).

This paper presents the design, manufacture and tests of a microstrip antenna array with polarization diversity for radiofrequency sources tracking. The designed array is a composite part of a system based on the MUSIC (Multiple Signal Classification

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0317cccf19dd966ae39a9e5ad8c742c7
https://doi.org/10.1109/imoc.2017.8121092

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SIW resonant cavity for educational purposes

Autor: I. Bianchi, E. S. Silveira, B. M. Fabiani, Daniel C. Nascimento, Eduardo S. Sakomura

Publikováno v: 2016 IEEE International Symposium on Antennas and Propagation (APSURSI).

The design of low-cost SIW (substrate integrated waveguide) resonant cavity for educational laboratory is described in this paper. The cavity is analyzed by means of modal expansion method, equivalent lumped circuit and full wave simulation. In order

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e78ab172a9da811ae141602abf62682b
https://doi.org/10.1109/aps.2016.7695932

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Circularly-polarized antenna array for beam steering

Autor: B. M. Fabiani, Daniel C. Nascimento

Publikováno v: 2016 IEEE International Symposium on Antennas and Propagation (APSURSI).

In (his paper the design and optimization of a rectangular truncated corner microstrip antenna array for beam steering is presented. The designed six-element array exhibits optimized return loss (better than 18 dB) and broadside axial ratio (below 3

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ddbf131888a111b5ca71bc93a058522b
https://doi.org/10.1109/aps.2016.7696077

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