Journal ArticleDOI
Radiation and scattering from structures involving finite-size dielectric regions
Barry J. Rubin,S. Daijavad +1 more
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In this article, a full-wave approach is presented for calculating the scattered fields produced by structures that involve finite-size dielectric regions, and the matrix elements are calculated, depending upon the distance between the source and field locations.Abstract:
A full-wave approach is presented for calculating the scattered fields produced by structures that involve finite-size dielectric regions. The dielectric is first approximated by an array of interlocking thin-wall sections; the electric field boundary conditions are then applied through the use of appropriate surface impedances. Rooftop basis functions, chosen to represent the surface current, are appropriately placed on the thin-wall sections in such a way as to accurately represent the polarization current while preventing fictitious charge within the dielectric. Rooftop currents are also used to represent the current on any conductor that may be present. The matrix elements are calculated, depending upon the distance between the source and field locations, through a scheme that employs Taylor series expansions and point source approximations. The technique is applied to scattering from dielectric cubes and composite dielectric-conductor structures, and to radiation from microstrip structures. Numerical convergence and agreement with the literature are demonstrated. >read more
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Circuit models for three-dimensional geometries including dielectrics
Albert E. Ruehli,H. Heeb +1 more
TL;DR: In this paper, the authors extended the partial element equivalent circuit (PEEC) approach to include arbitrary homogeneous dielectric regions, and applied the new circuit models in the frequency as well as the time domain.
Journal ArticleDOI
Three-dimensional interconnect analysis using partial element equivalent circuits
H. Heeb,Albert E. Ruehli +1 more
TL;DR: In this paper, two extensions to the partial element equivalent circuit (PEEC) approach for interconnect modeling are presented, including retardation, the effect of the finite speed of electromagnetic interactions, is included.
Journal ArticleDOI
Study of meander line delay in circuit boards
Barry J. Rubin,B. Singh +1 more
TL;DR: In this article, a moment technique is used to determine the propagation delay in meander (serpentine) delay lines located in printed circuit boards of computer systems, and the full three-dimensional effects of the meander structure including signal line thickness, right-angle bends, and skin effect are included.
Journal ArticleDOI
Separation of Horizontal and Vertical Dependencies in a Surface/Volume Integral Equation Approach to Model Quasi 3-D Structures in Multilayered Media
Y. Schols,Guy A. E. Vandenbosch +1 more
TL;DR: In this paper, a new and efficient integral equation approach is presented to model heterogeneous dielectric volumes in a multilayered environment, where a perpendicular prismatic mesh can be fitted on the volumes and the 3-D displacement currents can be expanded in generalized rooftop functions with separated horizontal x, y- and vertical z-dependencies.
Journal ArticleDOI
Accuracy and stability improvements of integral equation models using the partial element equivalent circuit (PEEC) approach
TL;DR: In this article, the partial element equivalent circuit (PEEC) model is improved through the development of a refined method of computing both the partial inductances as well as the coefficients of potential.
References
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Journal ArticleDOI
A tetrahedral modeling method for electromagnetic scattering by arbitrarily shaped inhomogeneous dielectric bodies
TL;DR: In this article, a volume integral equation is formulated and solved by using the method of moments for calculating the electromagnetic scattering from and internal field distribution of arbitrarily shaped, inhomogeneous, dielectric bodies.
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A circular-harmonic computer analysis of rectangular dielectric waveguides
TL;DR: In this article, a computer analysis of the propagating modes of a rectangular dielectric waveguide is presented, based on an expansion of the electromagnetic field in terms of a series of circular harmonics multiplied by trigonometric functions.
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Simple and efficient numerical methods for problems of electromagnetic radiation and scattering from surfaces
TL;DR: In this paper, a simple and efficient numerical method is developed for treating electromagnetic problems of scattering and radiation from surfaces, where special consideration is given to the treatment of edges so that rather arbitrary geometrical configurations may be handled.
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Three-Dimensional Induced Polarization and Electromagnetic Modeling
TL;DR: In this paper, the induced polarization and electromagnetic responses of a three-dimensional body in the earth can be calculated using an integral equation solution, which is formulated by replacing the body by a volume of polarization or scattering current.
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Theory of Periodic Dielect Waveguides
TL;DR: In this paper, the propagation of electromagnetic waves along open periodic, dielectric waveguides is formulated as a rigorous and exact boundary-value problem, and the characteristic field solutions are shown to be of the surface-wave or leaky-wave type, depending on the ratio of periodicity to wavelength (d/lambda).