Perfect Plane-Wave Injection into a Finite FDTD Domain through Teleportation of Fields

Autor:	M. E. Watts
Rok vydání:	2003
Předmět:	Curl (mathematics) Nonlinear system Radiation Perfectly matched layer Discretization Mathematical analysis Plane wave Finite-difference time-domain method Time domain Electrical and Electronic Engineering Teleportation Electronic Optical and Magnetic Materials Mathematics
Zdroj:	Electromagnetics. 23:187-201
ISSN:	1532-527X 0272-6343
DOI:	10.1080/02726340390159504
Popis:	A new method is proposed for injecting plane waves (although not constrained solely to plane waves) into the computational domain of a finite-difference time domain (FDTD). Fields from a background FDTD space that can support perfect plane waves traveling at an arbitrary angle of incidence are used to calculate the equivalent currents on a rectangular boundary such that the currents so defined satisfy the discrete curl operator of FDTD. When these equivalent currents are copied onto another FDTD domain, the rectangular boundary acts as a perfect teleportation window, inside of which the plane wave exists and outside of which no fields are produced. Thus a scatterer within the window is illuminated with a perfect plane wave and its scattered fields exit transparently through the window. Thus a total field-scattered field FDTD formulation is attained automatically. This method correctly accounts for the nonlinear grid dispersion created by the discretization of the Yee grid. The only error in the plane wave...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9301505c4315abe00ab29da4bc772ea5 https://doi.org/10.1080/02726340390159504 Zobrazit plný text záznamu Plný text ve formátu PDF