Search Results - "Giarola, A.J."

Guest Editor's overview by Giarola, A.J.

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A theoretical description for the multiple-signal operation of a TWT by Giarola, A.J.

“…A multiple-large-signal theory for traveling-wave tubes (TWT's) is developed. The equations associated with the growth of the signal waves along the length of…”
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Analysis of optically controlled planar dielectric waveguides operating in the millimeter-wave band using FDTD by Farias, R.G., Giarola, A.J.

“…The finite-difference time-domain (FDTD) technique is applied to the analysis of planar dielectric waveguides controlled by means of an optical beam. This…”
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Dyadic Green's functions in the prolate spheroidal coordinate system by Giarola, A.J.

“…A complete formulation for obtaining dyadic Green's functions in the prolate spheroidal system is presented. These functions are of importance for solving…”
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Analysis of microstrip antennas on circular-cylindrical substrates with a dielectric overlay by da Costa Silva, F., Barroso de Assis Fonseca, S., Soares, A.J.M., Giarola, A.J.

“…The use of dyadic Green's functions and the moment method is explored for the solution of microstrip antenna problems on circular cylindrical substrates. The…”
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The use of FDTD for the analysis of magnetoplasma channel waveguides by Farias, R.G., Giarola, A.J.

“…The finite-difference time-domain (FDTD) method is used for the analysis of magnetoplasma rectangular channel waveguides. Single and parallel-coupled…”
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An FD-FD formulation for the analysis of the optical axis misalignment effect on propagation characteristics of anisotropic dielectric waveguides by da S.S. Sobrinho, C.L., Giarola, A.J.

“…A finite-difference frequency-domain (FD-FD) formulation is developed to study the dispersion characteristics of anisotropic dielectric waveguides with their…”
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Analysis of the selective behavior of multilayer structures with a dielectric grating by Costa, J.C.W.A., Giarola, A.J.

“…The potential use as dichroic surfaces in the millimeter frequency band of multilayer dielectric structures with a grating in one of the layers is examined. It…”
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Microstrip antenna on a conical surface by Descardeci, J.R., Giarola, A.J.

“…A theoretical analysis of microstrip antennas on conical conducting surfaces is presented. The resonant frequency, input impedance, radiation pattern, quality…”
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Computational environment for the study of optical waveguides by de Oliveira Pereira, D., Giarola, A.J., Costa, J.C.W.A.

“…A notebook in the software Mathematica is developed here for the analysis of planar multilayer dielectric waveguides with the objective of using it as a…”
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Electromagnetic wave propagation in multilayer dielectric periodic structures by Crisostomo, J., Costa, W.A., Giarola, A.J.

“…The propagation characteristics in multilayer dielectric periodic structures, that extends a previous analysis by introducing additional dielectric layers, is…”
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The use of FDTD for the analysis of semiconductor waveguides containing a magnetostatic-field controlled plasma by Farias, R.G., Giarola, A.J.

“…A finite-difference time domain (FDTD) method is developed for the analysis of the electromagnetic wave propagation in semiconductor waveguides containing a…”
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Analysis of an infinite array of rectangular anisotropic dielectric waveguides using the finite-difference method by da Silva Souza Sobrinho, C.L., Giarola, A.J.

“…The finite-difference method is used in the analysis of the propagation characteristics of an infinite array of rectangular dielectric waveguides. Particular…”
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Operation in the TM/sub 10/ mode of a microstrip antenna on a conical surface by Barbosa, W.G., Giarola, A.J.

“…A theoretical development is presented for the analysis of microstrip antennas on conical surfaces, operating in the TM/sub 10/ mode. The cavity model with…”
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Frequency-dependent FDTD method applied to optically-controlled dielectric waveguide by Farias, R.G., Giarola, A.J.

“…The finite-difference in the time-domain method for dispersive media ((FD)/sup 2/TD) is applied to study the wave propagation in optically-controlled…”
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Radiation from cone-shape flanged open-ended thin-wall circular waveguide by Conforti, E., Giarola, A.J.

“…The performance of an open-ended circular waveguide with a very sharp cone-shaped flanged termination was measured. These measured results were found to…”
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Processing System for Design and Analysis of Microwave-Integrated-Circuits Layouts by Saviani, S.S., Giarola, A.J.

“…A processing system consisting of two main computer programs, one for the design and the other for the analysis of microwave-integrated-circuits layouts using…”
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Multiple signal operation of a TWT by Giarola, A.J.

“…Due to their wide operating frequency band (almost an octave), traveling wave tubes have become very attractive for use in multiple-access communication…”
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Radiation reduction due to a step profile in the upper face of a curved optical waveguide by Souza, R.M.D.F., Giarola, A.J.

“…In order to reduce the radiation in curved optical waveguides, the introduction of a step index of refraction profile in its upper face by means of diffusion…”
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Radiation and mode conversion free anisotropic dielectric tapers by Souza, R.M.deF, Giarola, A.J.

“…Equations for anisotropic dielectric nonleaky tapers with no radiation losses and no mode conversion are derived from the vector Maxwell's equations in three…”
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