This HTML5 document contains 40 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

Namespace Prefixes

PrefixIRI
dcthttp://purl.org/dc/terms/
dbohttp://dbpedia.org/ontology/
foafhttp://xmlns.com/foaf/0.1/
n14https://global.dbpedia.org/id/
dbthttp://dbpedia.org/resource/Template:
rdfshttp://www.w3.org/2000/01/rdf-schema#
freebasehttp://rdf.freebase.com/ns/
rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
owlhttp://www.w3.org/2002/07/owl#
wikipedia-enhttp://en.wikipedia.org/wiki/
dbphttp://dbpedia.org/property/
dbchttp://dbpedia.org/resource/Category:
provhttp://www.w3.org/ns/prov#
xsdhhttp://www.w3.org/2001/XMLSchema#
wikidatahttp://www.wikidata.org/entity/
dbrhttp://dbpedia.org/resource/

Statements

Subject Item
dbr:Index_of_physics_articles_(F)
dbo:wikiPageWikiLink
dbr:Finite-difference_frequency-domain_method
Subject Item
dbr:Finite-Difference_Frequency-Domain
dbo:wikiPageWikiLink
dbr:Finite-difference_frequency-domain_method
dbo:wikiPageRedirects
dbr:Finite-difference_frequency-domain_method
Subject Item
dbr:Finite-difference_frequency-domain_method
rdfs:label
Finite-difference frequency-domain method
rdfs:comment
The finite-difference frequency-domain (FDFD) method is a numerical solution method for problems usually in electromagnetism and sometimes in acoustics, based on finite-difference approximations of the derivative operators in the differential equation being solved.
dct:subject
dbc:Computational_electromagnetics dbc:Frequency-domain_analysis dbc:Numerical_differential_equations
dbo:wikiPageID
7088631
dbo:wikiPageRevisionID
1104053175
dbo:wikiPageWikiLink
dbr:Current_density dbr:Eigenproblem dbr:Electromagnetism dbc:Frequency-domain_analysis dbr:Finite_element_method dbr:Numerical_solution dbc:Computational_electromagnetics dbr:Derivative_operator dbr:Finite-difference_approximation dbc:Numerical_differential_equations dbr:Normal_mode dbr:Differential_equation dbr:Finite-difference_time-domain dbr:Acoustics dbr:Finite-difference_time-domain_method
owl:sameAs
wikidata:Q5450379 n14:4jdcw freebase:m.0h3llc
dbp:wikiPageUsesTemplate
dbt:Short_description dbt:Use_American_English dbt:Reflist
dbo:abstract
The finite-difference frequency-domain (FDFD) method is a numerical solution method for problems usually in electromagnetism and sometimes in acoustics, based on finite-difference approximations of the derivative operators in the differential equation being solved. While "FDFD" is a generic term describing all frequency-domain finite-difference methods, the title seems to mostly describe the method as applied to scattering problems. The method shares many similarities to the finite-difference time-domain (FDTD) method, so much of the literature on FDTD can be directly applied. The method works by transforming Maxwell's equations (or other partial differential equation) for sources and fields at a constant frequency into matrix form . The matrix A is derived from the wave equation operator, the column vector x contains the field components, and the column vector b describes the source. The method is capable of incorporating anisotropic materials, but off-diagonal components of the tensor require special treatment. Strictly speaking, there are at least two categories of "frequency-domain" problems in electromagnetism. One is to find the response to a current density J with a constant frequency ω, i.e. of the form , or a similar time-harmonic source. This frequency-domain response problem leads to an system of linear equations as described above. An early description of a frequency-domain response FDTD method to solve scattering problems was published by Christ and Hartnagel (1987). Another is to find the normal modes of a structure (e.g. a waveguide) in the absence of sources: in this case the frequency ω is itself a variable, and one obtains an eigenproblem (usually, the eigenvalue λ is ω2). An early description of an FDTD method to solve electromagnetic eigenproblems was published by Albani and Bernardi (1974).
prov:wasDerivedFrom
wikipedia-en:Finite-difference_frequency-domain_method?oldid=1104053175&ns=0
dbo:wikiPageLength
6810
foaf:isPrimaryTopicOf
wikipedia-en:Finite-difference_frequency-domain_method
Subject Item
dbr:Fdfd
dbo:wikiPageWikiLink
dbr:Finite-difference_frequency-domain_method
dbo:wikiPageRedirects
dbr:Finite-difference_frequency-domain_method
Subject Item
dbr:Finite-difference_frequency-domain
dbo:wikiPageWikiLink
dbr:Finite-difference_frequency-domain_method
dbo:wikiPageRedirects
dbr:Finite-difference_frequency-domain_method
Subject Item
wikipedia-en:Finite-difference_frequency-domain_method
foaf:primaryTopic
dbr:Finite-difference_frequency-domain_method