0000000000623771

AUTHOR

John Litva

showing 4 related works from this author

Efficient FDTD analysis of discontinuities in a square coaxial waveguide

1996

Engineeringbusiness.industryAcousticsFinite-difference time-domain methodElectronic engineeringCoaxial waveguidesElectrical and Electronic EngineeringClassification of discontinuitiesCondensed Matter PhysicsbusinessAtomic and Molecular Physics and OpticsSquare (algebra)Electronic Optical and Magnetic MaterialsMicrowave and Optical Technology Letters
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A circular mesh scheme for the non-orthogonal finite difference time domain method

2002

Beam forming networks (BFN) are an important component of a complex satellite antenna system because they are used to provide accurate amplitude and phase excitation to the elements of the feed network. The need for handling high power and the need for a high degree of integrability, often leads one to choose square coaxial metal lines for constructing BFNs. BFNs usually require variable power dividers such as the rat-race (or ring) couplers with constant or variable divider ratios in order to deliver a prescribed amount of power to a certain element of an antenna array to steer the beam in a desired direction. However, modeling of such circular structures in square coaxial form is not an e…

Antenna arrayEngineeringbusiness.industryMesh generationNumerical analysisFinite difference methodFinite-difference time-domain methodElectronic engineeringCoaxialbusinessTopologySquare (algebra)Power (physics)IEEE Antennas and Propagation Society International Symposium. 1995 Digest
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Combination of finite impulse response neural network technique with FDTD method for simulation of electromagnetic problems

1996

The finite difference time domain (FDTD) method requires long computation times for simulating resonant or high-Q structures. The authors incorporate the finite impulse response neural network technique as a predictor in order to save time in FDTD simulations. The applicability of the technique is demonstrated by carrying out an analysis of a waveguide filter.

Waveguide filterArtificial neural networkFinite impulse responseComputer scienceElectronic engineeringFinite-difference time-domain methodPhysics::OpticsElectrical and Electronic EngineeringAlgorithmElectronics Letters
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FDTD signal extrapolation using a finite impulse response neural network model

1999

Waveguide filterFinite impulse responseComputer scienceAcousticsExtrapolationCondensed Matter PhysicsSignalAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsElectronic engineeringElectrical and Electronic EngineeringInfinite impulse responseDigital filterLinear filterImpulse responseMicrowave and Optical Technology Letters
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