Topic
Computational electromagnetics
About: Computational electromagnetics is a research topic. Over the lifetime, 6412 publications have been published within this topic receiving 113727 citations. The topic is also known as: Electromagnetic field analysis.
Papers published on a yearly basis
Papers
More filters
TL;DR: A new source-dependent but diagonal scattering tensor is introduced to approximate the electromagnetic fields internal to a scatterer and has favorable accuracy and wider range of applicability than the existing approximations.
Abstract: We introduce a new source-dependent but diagonal scattering tensor to approximate the electromagnetic fields internal to a scatterer. The approximate analytical expressions for the three diagonal scattering components are derived. Numerical tests show that the new approximation has favorable accuracy and wider range of applicability than the existing approximations such as the widely used extended Born approximation and the quasi-analytical approximation.
20 citations
DOI•
01 Jan 2003
TL;DR: A submitted manuscript is the version of the article upon submission and before peer-review as discussed by the authors, while a published version is the final layout of the paper including the volume, issue and page numbers.
Abstract: • A submitted manuscript is the version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website. • The final author version and the galley proof are versions of the publication after peer review. • The final published version features the final layout of the paper including the volume, issue and page numbers.
20 citations
Abstract: In this work, a state model which portrays the dynamic electromagnetic characteristics of a synchronous machine is derived based upon the first order finite element method. The method of finite elements is used to determine the axial component of magnetic vector potential throughout the cross section of the machine. Algebraic relationships between the winding voltages and the magnetic vector potentials are derived. These are used to establish a state model which admits winding voltages as inputs. The resulting model consists of a set of first order, ordinary differential equations which predict vector potentials at grid nodes along with the winding currents as time proceeds following arbitrary disturbances in stator or rotor voltages. As an initial verification step, this method has been applied in two linear examples. The first involves a simplified geometric representation of the synchronous machine for which an analytical solution of the defining field equations can be obtained. The second involves a more detailed geometry which includes stator and rotor slots. Numerical solutions are shown to be in excellent agreement with analytical solutions for the simplified structure. In the detailed geometry, numerical solutions are shown to compare favorably with the classical equivalent circuit representation.
20 citations
06 Feb 1996
TL;DR: The Geometry Independent MEI (GIMEI) is proposed which substantially improved the original MEI method and is used for capacitance extraction of general two-dimension VLSI multilayer and multiconductor interconnects.
Abstract: Measured Equation of Invariance (MEI) is a new concept in computational electromagnetics. It has been demonstrated that the MEI is such an efficient boundary truncation technique that the meshes can be terminated very close to the object and still strictly preserves the sparsity of the FD equations. Therefore, the final system matrix encountered by MEI is a sparse matrix with size similar to that of integral equation methods. However, complicated Green's function and disagreeable Sommerfeld integrals make the traditional MEI very difficult, if not impossible, to be applied to analyze multilayer and multiconductor interconnects. In this paper, we propose the Geometry Independent MEI (GIMEI) which substantially improved the original MEI method. We use GIMEI for capacitance extraction of general two-dimension VLSI multilayer and multiconductor interconnect. Numerical results are in good agreement with various published data. We also include a simple three-dimensional example and compared GIMEI with FASTCAP from MIT. The accuracy is maintained while GIMEI care generally an order of magnitude faster than FASTCAP with much less memory usage.
20 citations
TL;DR: In this article, an integral equation method is proposed for analyzing scattering and mode conversion of guided modes by boundary deformations of a dielectric slab waveguide, where the tangential electromagnetic fields on the deformed boundaries are derived using the integral expressions of fields and the fundamental properties which the integral over a closed path has.
Abstract: An integral equation method is proposed for analyzing scattering and mode conversion of guided modes by boundary deformations of a dielectric slab waveguide. Integral equations are derived for the tangential electromagnetic fields on the deformed boundaries only, using the integral expressions of fields and the fundamental properties which the integral over a closed path has. Mode conversion coefficients for guided and radiation modes are easily obtained from the solutions of the integral equations. Using the mode conversion coefficients, physical quantities such as radiation loss, reflected mode power, and total scattered power, are calculated. Numerical examples are presented for the two-dimensional models of the typical boundary deformations in optical fibers caused by a fusion splice.
20 citations