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Least Squares Finite-Difference Time-Domain
IEEE Transactions on Antennas and Propagation, 2021A central least-squares spatial derivative procedure is developed. It provides simple formulas, similar to finite differences, to approximate spatial derivatives. In addition, a least-squares finite-difference time-domain (LS-FDTD) method is formulated for attenuating high-frequency nonphysical modes, superimposed to physical solution, produced by Yee ...
Rodrigo M. S. de Oliveira +1 more
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Finite-difference time-domain on the cell/B.E. processor
2008 IEEE International Symposium on Parallel and Distributed Processing, 2008Finite-Difference Time-Domain (FDTD) is a kernel used to solve problems in electromagnetics applications such as microwave tomography. It is a data-intensive and computation-intensive problem. However, its computation scheme indicates that an architecture with SIMD support has the potential to bring performance improvement over traditional ...
Meilian Xu, Parimala Thulasiraman
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Finite difference time domain methods for piezoelectric crystals
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2006The numerical simulation of acoustic wave propagation through piezoelectric crystals using the finite-difference time-domain (FDTD) method is introduced. The update equations for the velocity and stress fields are derived and applied to the propagation of ultrasonic waves in three substrates.
Farid, Chagla, Peter M, Smith
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Finite-Difference Time-Domain Methods
2005Publisher Summary This chapter discusses finite-difference time-domain (FDTD) methods. During the 1970s and 1980s, a number of researchers realized the limitations of frequency-domain integral-equation solutions of Maxwell's equations. This led to early explorations of a novel alternative approach: direct time-domain solutions of Maxwell's ...
Susan C. Hagness +2 more
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The Finite-Difference Time-Domain Method
2012The finite-difference time-domain (FDTD) scheme is one of the most popular computational methods for microwave problems; it is simple to program, highly efficient, and easily adapted to deal with a variety of problems. The FDTD scheme is typically formulated on a structured Cartesian grid and it discretizes Maxwell’s equations formulated in the time ...
Thomas Rylander +2 more
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Quantum Finite-Difference Time-Domain Scheme
2020 IEEE International Conference on Computational Electromagnetics (ICCEM), 2020In quantum optics, the conventional method to quantize electromagnetic fields is canonical quantization which is analogue to the classical modal expansion method. Here, on the other hand, we show a quantum finite-difference time-domain scheme that can track the time evolution of quantum electromagnetic operators in the coordinate Hilbert space.
Dong-Yeop Na, Weng Cho Chew
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Stochastic finite-difference time-domain
2012This dissertation presents the derivation of an approximate method to determine the mean and the variance of electromagnetic fields in the body using the Finite-Difference Time-Domain (FDTD) method. Unlike Monte Carlo analysis, which requires repeated FDTD simulations, this method directly computes the variance of the fields at every point in space at ...
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Broadband Finite Difference Time Domain Modeling
22nd EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, 2009Code was designed at The Ohio State University Department of Electrical and Computer Engineering in conjunction with the School of Earth Sciences with the goal of forward modeling subsurface geological systems. To attain this goal the finite difference time domain (FDTD) method was implemented through singleand multi-processor systems leading to the ...
Jeffrey J. Daniels +4 more
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FPGA finite difference time domain solver for thermal simulation
International Conference on Field Programmable Logic and Applications, 2005., 2005The use of infrared (IR) images of the soil is an efficient technique to detect shallowly buried landmines. The detection is possible due to the different thermal properties of the soil and the mine. The core of this technique is the simulation of the heat transfer processes in the soil and at the soil-air interface.
Fernando Pardo +3 more
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Effects of Segmented Finite Difference Time Domain on GPU
2014Finite Difference Time Domain (FDTD) is the most popular method in computational electromagnetics. In acoustics, FDTD is often used as a numerical analysis technique to model mechanical wave and acoustics. FDTD in general is computationally expensive in terms of time due to its large number of time steps for accurate precision and is data parallel in ...
Jose Juan Mijares Chan +3 more
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