Full-Wave Simulations of Electromagnetic Scattering Problems With Billions of Unknowns

Full-wave simulations of electromagnetic cloaking structures.

Pendry et al. have reported electromagnetically anisotropic and inhomogeneous shells that, in theory, completely shield an interior structure of arbitrary size from electromagnetic fields without perturbing the external fields. Neither the coordinate transformation-based analytical formulation nor the supporting ray-tracing simulation indicate how material perturbations and full-wave effects mi...

Full-wave Algorithms for Model Order Reduction and Electromagnetic Analysis of Impedance and Scattering

As technology advances and sophisticated electronic systems achieve ubiquity, the demand for thorough, efficient Electromagnetic (EM) analysis continues to rise. The prohibitive costs of constructing and maintaining measurement facilities and designing and building system prototypes has fueled even greater demand for Computational Electromagnetics (CEM). Today’s CEM solvers can generate models ...

Fast Methods for Full-wave Electromagnetic Simulations of Integrated Circuit Package Modules

Full wave simulations of lower hybrid wave propagation in tokamaks

Lower hybrid (LH) waves have the attractive property of damping strongly via electron Landau resonance on relatively fast tail electrons at (2.5−−3)× vte, where vte ≡ (2Te/me) is the electron thermal speed. Consequently these waves are well-suited to driving current in the plasma periphery where the electron temperature is lower, making LH current drive (LHCD) a promising technique for off-axis...

Electromagnetic Wave Scattering by Small Impedance Particles

Scattering of electromagnetic (EM) waves by one and many small (ka 1) impedance particles Dm of an arbitrary shape, embedded in a homogeneous medium, is studied. Analytic formula for the field, scattered by one particle, is derived. The scattered field is of the order O(a2−κ), where κ ∈ [0, 1) is a number. This field is much larger than in the Rayleigh-type scattering. An equation is derived fo...