Search Results - "Rego, Cássio G."

Efficient Ray Tracing for Radio Channel Characterization of Urban Scenarios by Schettino, D.N., Moreira, F.J.S., Rego, C.G.

“…This paper presents an efficient ray tracing algorithm for the use of the uniform theory of diffraction (UTD) in radio channel characterizations of urban…”
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An Efficient and Accurate Algorithm for Electromagnetic Wave Propagation Modeling Based on Wavelet Transforms by Rocha, Alexandre, Parada, Diego, Tami, Diego, Guevara, Dinael, Rego, Cássio G.

“…Abstract In this article, a comprehensive analysis of the approach known as Split-Step Wavelet Parabolic Equation (SSW-PE) in modeling radio wave propagation…”
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Novel Heuristic UTD Coefficients for the Characterization of Radio Channels by Schettino, D.N., Moreira, F.J.S., Borges, K.L., Rego, C.G.

“…This paper presents novel heuristic coefficients for the uniform theory of diffraction (UTD), suited to analyze the scattering by lossy conducting wedges in an…”
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Analysis of Heuristic Uniform Theory of Diffraction Coefficients for Electromagnetic Scattering Prediction by Triana, Hernan G., Moreira, Fernando J. S., Navarro, Andrés, Guevara, Dinael, Rego, Cássio G., Tami, Diego, Giménez, Jordi

“…We discuss three sets of heuristic coefficients used in uniform theory of diffraction (UTD) to characterize the electromagnetic scattering in realistic urban…”
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A generalized iterative multiregion technique to solve the nonhomogeneous electromagnetic wave equation by Adriano, Ricardo L. S., Vasconcelos, João A., Rego, Cássio G. do, Silva, Élson J.

“…This article presents a generalization of the iterative multiregion technique applied in solving the nonhomogeneous wave equation. A formal proof that this…”
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Parallel Implementation of a Combined Moment Expansion and Spherical-Multipole Time-Domain Near-Field to Far-Field Transformation by Ramos, Glaucio L., Rego, Cassio G., Fonseca, Alexandre R.

“…A time-domain spherical-multipole near-to-far-field algorithm running in a parallelized code version is introduced in this paper. Such an approach is employed…”
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Characterization of the radiation pattern of antennas via FDTD and time-domain moment expansion by Ramos, Glaucio L., Rego, Cássio G.

“…An alternative method is proposed to characterize the radiation pattern of antennas from an impulse response, based on a moment expansion together with a…”
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Characterization of the radiation pattern of antennas using time-domain spherical-multipole and moment expansion by Ramos, Glaucio L., Rego, Cássio G., Fonseca, Alexandre R.

“…This paper presents results of a time-domain spherical-multipole near-to-far-field transformation together with a moment expansion applied to antenna radiation…”
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Heuristic UTD coefficients for electromagnetic scattering by lossy conducting wedges by Schettino, Daniela N., Moreira, Fernando J. S., Rego, Cássio G.

“…In this study, heuristic uniform theory of diffraction coefficients are suited to account for scattering by lossy conducting wedges.The novel heuristic…”
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High-frequency asymptotic formulation for prompt response of parabolic reflector antennas by Rego, Cássio G., Gonçalves, Sandro T.M., Moreira, Fernando J.S.

“…This work presents some important concepts for the temporal characterization of reflector antennas based on the determination of the transient antenna response…”
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Modeling of a Conical Antenna Applied in a Waveguide Device by Tami, Diego, Rego, Cassio G., Ramos, Glaucio Lopes

“…This work presents a study about impedance matching in a microwave device formed by the junction of waveguides. These transitions are characterized by a probe…”
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Improved High-Order FDTD Parallel Propagator for Realistic Urban Scenarios and Atmospheric Conditions by Garcia Batista, Claudio, do Rego, Cassio G., Nunes, Marcelo Lucio, Fernandes Neves, Frederico

“…This letter introduces an improved finite-difference time-domain (FDTD) propagator for radiowave prediction in complex urban environments. The original method…”
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A novel FDTD/WP-PML/NUFFT algorithm applied to the design of a printed metamaterial enhanced antenna by Ramos, Glaucio L., Capovilla, Carlos E., Araújo, Humberto X., Rego, Cássio G., Casella, Ivan R.S., Pereira, Paulo T.

“…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…”
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An integral equation model for radiowave propagation over inhomogeneous smoothly irregular terrain by Batista, Cláudio G., Rego, Cássio G.

“…This work introduces an integral equation formulation to model the radiowave propagation over inhomogeneous smoothly irregular terrain. The ground energy loss…”
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A Time-Domain Uniform Asymptotic Theory Applied to the Analysis of Pulse-Excited PEC Wedges by Rego, C. G., Hasselmann, F. J. V.

“…In this letter, a time-domain version of the uniform asymptotic theory of diffraction, henceforth named TD-UAT, is introduced and is employed to obtain the…”
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Heuristic UTD coefficients for radiowave coverage prediction in a urban scenario by Tami, Diego, Rego, Cassio G., Moreira, Fernando J. S., Guevara, Dinael, Navarro, Andres

“…This paper presents a comparison of three heuristic coefficients for the Uniform Theory of Diffraction (UTD), used to characterize the radiowave scattering in…”
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Use of complex source beam-moment method for solving scattering problems from terrain profiles by Alves da Rocha, Alexandre, Rego, Cassio G., Moreira, Fernando J. S.

“…This work presents results involving the application of the CSB-MoM, a new hybrid complex source beam moment method, as an algorithm that analyzes propagation…”
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Microwave-Based Complementary Split-Ring Resonator for the Detection of Variations in Aqueous Media by Velasquez, Reinaldo, Tami, Diego, Medeiros-Ribeiro, Gilberto, Rego, Cassio G., Ramirez, Jhonattan C.

“…In this paper, we demonstrated a highly sensitive microwave-based resonator sensor capable of detecting variations in an aqueous medium of up to 0.94 mg/dL. In…”
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Data Consumption and User Experience in Video Lecture Sessions via Mobile Telephony Network by Oliveira, Junia Maisa, Carvalho, Marcos, Macedo, Daniel, Rego, Cassio G., Nogueira, Jose Marcos

“…The feasibility of remote teaching as an alternative to face-to-face classes during the period of social isolation caused by the Covid-19 pandemic encountered…”
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Characterization of the radiation pattern of antennas via FDTD and time-domain moment expansion by Glaucio L. Ramos, Cássio G. Rego

“…An alternative method is proposed to characterize the radiation pattern of antennas from an impulse response, based on a moment expansion together with a…”
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