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.

Loss spectrum and electromagnetic behavior of problem 21 family

Abstract: A set of both the magnetic and electromagnetic shielding models, referred to as a new member of the Problem 21 family, is proposed to investigate the shielding effects of different kinds of shields. This paper presents the newly measured and calculated results of both the magnetic field and stray-field loss concerning the TEAM-based models to detail the electromagnetic behavior of the Problem 21 family, evaluates the engineering applicability of three-dimensional eddy current analysis methods, and validates the engineering effectiveness of the practical loss modeling proposed by the authors

FDTD Modeling of Dispersive Bianisotropic Media Using Z-Transform Method

Abstract: The finite-difference time-domain (FDTD) technique for simulating electromagnetic wave interaction with a dispersive chiral medium is extended to include the simulation of dispersive bianisotropic media. Due to anisotropy and frequency dispersion of such media, the constitutive parameters are represented by frequency-dependent tensors. The FDTD is formulated using the Z-transform method, a conventional approach for applying FDTD in frequency-dispersive media. Omega medium is considered as an example of bianisotropic media, the frequency-dependent tensors of which are based on analytical models. The extended FDTD method is used to determine the reflection and transmission coefficients of co- and cross-polarized electromagnetic waves from omega slabs, illuminated by normally incident plane waves. Three cases are simulated: 1) a slab of uniaxial omega medium with its optical axis parallel to the propagation vector; 2) a slab of rotated uniaxial omega medium with its optical axis not parallel to the propagation vector; and 3) a slab of biaxial omega medium. The results are validated by means of comparisons with analytical solutions.

Industrial design of axisymmetrical devices using a customized FDTD solver from RF to optical frequency bands [Application Notes]

Abstract: This article focused on the vector two-dimensional finite-difference time-domain (V2-D FDTD) method for axisymmetrical devices, also known as BOR FDTD. The approach to solving Maxwell equations by the V2-D FDTD method is straightforward. Not only the whole structure simulation is feasible, facilitating a search for globally optimum solutions, but also a valuable insight is provided into the subtleties of the device operation in the 3-D space and time. A graphical interface of the QW-V2D solver has been used to exemplify how the software helps in problem solving and quick search for new solutions.