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Stable discretization of the electric-magnetic field integral equation with the taylor-orthogonal basis functions
dc.contributor.author | Úbeda Farré, Eduard |
dc.contributor.author | Tamayo Palau, José María |
dc.contributor.author | Rius Casals, Juan Manuel |
dc.contributor.author | Heldring, Alexander |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.date.accessioned | 2013-09-03T10:33:27Z |
dc.date.created | 2013-03 |
dc.date.issued | 2013-03 |
dc.identifier.citation | Ubeda, E. [et al.]. Stable discretization of the electric-magnetic field integral equation with the taylor-orthogonal basis functions. "IEEE transactions on antennas and propagation", Març 2013, vol. 61, núm. 3, p. 1484-1490. |
dc.identifier.issn | 0018-926X |
dc.identifier.uri | http://hdl.handle.net/2117/20089 |
dc.description.abstract | We present two new facet-oriented discretizations in method of moments (MoM) of the electric-magnetic field integral equation (EMFIE) with the recently proposed Taylor-orthogonal (TO) and divergence-Taylor-orthogonal (div-TO) basis functions. These new schemes, which we call stable, unlike the recently published divergence TO discretization of the EMFIE, which we call standard, result in impedance matrices with stable condition number in the very low frequency regime. More importantly, we show for sharp-edged objects of moderately small dimensions that the computed RCS with the stable EMFIE schemes show improved accuracy with respect to the standard EMFIE scheme. The computed RCS for the sharp-edged objects tested becomes much closer to the RCS computed with the RWG discretization of the electric-field integral equation (EFIE), which is well-known to provide good RCS accuracy in these cases. To provide best assessment on the relative performance of the several implementations, we have cancelled the main numerical sources of error in the RCS computation: (i) we implement the EMFIE so that the non-null static quasi-solenoidal current does not contribute in the far- field computation; (ii) we compute with machine-precision the strongly singular Kernel-contributions in the impedance elements with the direct evaluation method. |
dc.format.extent | 7 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Matemàtiques i estadística::Equacions diferencials i integrals |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica |
dc.subject.lcsh | Radial basis functions |
dc.subject.lcsh | Integral equations |
dc.subject.lcsh | Moments method (Statistics) |
dc.subject.lcsh | Magnetic fields--Mathematics |
dc.subject.other | Basis functions |
dc.subject.other | integral equations |
dc.subject.other | magnetic field integral equation magnetic field integral equation (MFIE) |
dc.subject.other | method of moments (MoM) |
dc.title | Stable discretization of the electric-magnetic field integral equation with the taylor-orthogonal basis functions |
dc.type | Article |
dc.subject.lemac | Equacions integrals |
dc.contributor.group | Universitat Politècnica de Catalunya. ANTENNALAB - Grup d'Antenes i Sistemes Radio |
dc.identifier.doi | 10.1109/TAP.2012.2227925 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6355625 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 12410903 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Ubeda, E.; Tamayo, J.M.; Rius, J.; Heldring, A. |
local.citation.publicationName | IEEE transactions on antennas and propagation |
local.citation.volume | 61 |
local.citation.number | 3 |
local.citation.startingPage | 1484 |
local.citation.endingPage | 1490 |
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