Journal ArticleDOI
FD-TD analysis of electromagnetic radiation from modules-on-backplane configurations
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TLDR
In this paper, the effects of the modules in influencing the overall radiating capacity of the configuration are addressed by using simplified modules-on-backplane models and by using a voltage source as the source of electromagnetic energy at a connector between a module and the backplane.Abstract:
The electromagnetic radiation from a modules-on-backplane configuration found in computers is analyzed by means of the finite-difference time-domain (FD-TD) technique. The issues pertaining to the effects of the modules in influencing the overall radiating capacity of the configuration are addressed. Analyses are facilitated by using simplified modules-on-backplane models and by using a voltage source as the source of electromagnetic energy at a connector between a module and the backplane. The potential for enhancement of spurious emissions by the module-on-backplane configuration is demonstrated. For modules of typical dimensions, resonance is observed at the hundreds of MHz frequency range. Comparisons between numerical predictions and measurements are conducted to validate the numerical method. >read more
Citations
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Journal ArticleDOI
EMI mitigation with multilayer power-bus stacks and via stitching of reference planes
TL;DR: An approach for EMI mitigation by stitching multiple ground planes together along the periphery of multilayer PCB power-bus stacks with closely spaced vias is reported and quantified in this article.
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Estimating the noise mitigation effect of local decoupling in printed circuit boards
TL;DR: In this article, a test board with a local decoupling capacitor was studied and the noise mitigation effect due to the capacitor placed adjacent to an input test port was measured, and closed-form expressions for self and mutual inductances of vias were developed, so that the noise mitigating effect can then be estimated using the previously developed expression.
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A two-level plane wave time-domain algorithm for fast analysis of EMC/EMI problems
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Physics-Based Inductance Extraction for Via Arrays in Parallel Planes for Power Distribution Network Design
Jingook Kim,Liehui Ren,Jun Fan +2 more
TL;DR: In this paper, a systematic approach for inductance extraction for via arrays between two parallel planes is presented, where both self and mutual inductance values are obtained based on a cavity model.
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Analysis of crosstalk between finite-length microstrip lines: FDTD approach and circuit-concept modeling
TL;DR: In this paper, two approaches, one based on the circuit concept and the other based on field theory, are used to model the crosstalk between two microstrip lines of finite length and arbitrary orientation.
References
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Numerical solution of initial boundary value problems involving maxwell's equations in isotropic media
Abstract: Maxwell's equations are replaced by a set of finite difference equations. It is shown that if one chooses the field points appropriately, the set of finite difference equations is applicable for a boundary condition involving perfectly conducting surfaces. An example is given of the scattering of an electromagnetic pulse by a perfectly conducting cylinder.
Journal ArticleDOI
Absorbing boundary conditions for the numerical simulation of waves
Björn Engquist,Andrew J. Majda +1 more
TL;DR: This work develops a systematic method for obtaining a hierarchy of local boundary conditions at these artifical boundaries that not only guarantee stable difference approximations, but also minimize the (unphysical) artificial reflections that occur at the boundaries.
Journal ArticleDOI
Absorbing Boundary Conditions for the Finite-Difference Approximation of the Time-Domain Electromagnetic-Field Equations
TL;DR: In this paper, highly absorbing boundary conditions for two-dimensional time-domain electromagnetic field equations are presented for both two-and three-dimensional configurations and numerical results are given that clearly exhibit the accuracy and limits of applicability of these boundary conditions.
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Numerical Solution of Steady-State Electromagnetic Scattering Problems Using the Time-Dependent Maxwell's Equations
Allen Taflove,M.E. Brodwin +1 more
TL;DR: In this paper, a numerical method for the solution of the electromagnetic fields within an arbitrary dielectric scatterer of the order of one wavelength in diameter is described, and an error of less than /spl plusmn/10 percent in locating and evaluating the standing wave peaks within the cylinder is achieved for a program execution time of 1 min.
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Application of the three-dimensional finite-difference time-domain method to the analysis of planar microstrip circuits
TL;DR: In this article, a direct three-dimensional finite-difference time-domain (FDTD) method is applied to the full-wave analysis of various microstrip structures and antennas.