Grating superposition method: ultrafast electromagnetic numerical analysis for random structures

Numerical Analysis of Electromagnetic Bandgap Structures of Arbitrary Shapes

Electromagnetic bandgap structure consisting of an arbitrary number of cylinders are considered. In this paper, the scattering properties from this multilayered structure consisted of arbitrary shaped cylinders are analyzed. The method is used to study large varieties of configurations and structures in respect to varying shapes, sizes and material compositions. Practical applications are illus...

Numerical Analysis of Electromagnetic Scattering Using Constrained Interpolation Profile Method

The field of computational electromagnetics (CEM) was significantly broadened by the pioneer work of Yee, when the time-dependent Maxwell’s equations are solved numerically in an isotropic medium [1]. This algorithm is called finite-difference time-domain (FDTD) Method, and it has second-order accuracy in temporal and spatial domain [2]. Since FDTD method is relatively simple to implement, effi...

Electromagnetic Wave Scattering in Random Layered Structures

Electromagnetic Emission Analysis for IC Packaging Structures

The IC packaging EMC/SI/PI problems have been broadly attested while its electromagnetic emissions are becoming increasingly significant as the data rate of digital system continues increasing. This paper focuses on EM emission behaviors for IC packaging structures. It is found that packaging EMI demonstrates clearly low and high frequency behaviors. Both theoretical analysis based on the first...

Optimization of Fan Geometry for Urban Train Traction Motors using Coupled Numerical Electromagnetic and Thermal Analysis

One of the most important parameters in designing electrical motors is heat generation by the motor and the way it is dissipated. Temperature rising reduce efficiency and reliability of traction motors and leads to failure. In this paper, an urban train traction motor in a 3D computational fluid dynamics (CFD) simulation has been investigated. Maxwell software for electromagnetic simulation and...