Macro Basis Functions for Efficient Analysis of Thick Wires in the MoM
This article presents a macro basis function (MBF) formulation for efficient method of moments (MoM) modeling of conducting wires with appreciable thickness. General surface formulations are prohibitively inefficient for electrically thin wires, while the typical exact-kernel, rooftop-basis, thin-wi...
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| Vydáno v: | IEEE transactions on antennas and propagation Ročník 72; číslo 7; s. 5865 - 5876 |
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| Hlavní autoři: | , , , , |
| Médium: | Journal Article |
| Jazyk: | angličtina |
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New York
IEEE
01.07.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
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| ISSN: | 0018-926X, 1558-2221, 1558-2221 |
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| Abstract | This article presents a macro basis function (MBF) formulation for efficient method of moments (MoM) modeling of conducting wires with appreciable thickness. General surface formulations are prohibitively inefficient for electrically thin wires, while the typical exact-kernel, rooftop-basis, thin-wire MoM becomes wholly inaccurate for electrically thick cylinders. The MBF formulation bridges the gap between the thin-wire MoM and general conducting surface MoM formulations by introducing circumferential variations and components beyond the standard rooftop basis functions. The MBFs are constructed upon a full-order, divergence-conforming, triangle-element MoM discretization. Comprehensive junction and end-cap treatment and tapered wire support are natural features of the formulation. As with thin-wire MoM, degrees of freedom (DoFs) are purely proportional to the electrical length of the wire. Results demonstrate that the intermediate range of "thick wires" is analyzed with practically the same accuracy as general surface MoM, with significantly reduced DoFs. |
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| AbstractList | This article presents a macro basis function (MBF) formulation for efficient method of moments (MoM) modeling of conducting wires with appreciable thickness. General surface formulations are prohibitively inefficient for electrically thin wires, while the typical exact-kernel, rooftop-basis, thin-wire MoM becomes wholly inaccurate for electrically thick cylinders. The MBF formulation bridges the gap between the thin-wire MoM and general conducting surface MoM formulations by introducing circumferential variations and components beyond the standard rooftop basis functions. The MBFs are constructed upon a full-order, divergence-conforming, triangle-element MoM discretization. Comprehensive junction and end-cap treatment and tapered wire support are natural features of the formulation. As with thin-wire MoM, degrees of freedom (DoFs) are purely proportional to the electrical length of the wire. Results demonstrate that the intermediate range of "thick wires" is analyzed with practically the same accuracy as general surface MoM, with significantly reduced DoFs. This article presents a macro basis function (MBF) formulation for efficient method of moments (MoM) modelling of conducting wires with appreciable thickness. General surface formulations are prohibitively inefficient for electrically thin wires, while the typical exact-kernel, rooftop-basis, thin-wire MoM becomes wholly inaccurate for electrically thick cylinders. The MBF formulation bridges the gap between thin-wire MoM, and general conducting surface MoM formulations, by introducing circumferential variations and components beyond the standard rooftop basis functions. The MBFs are constructed upon a full-order, divergence-conforming, triangle element MoM discretization. Comprehensive junction and end-cap treatment, and tapered wire support, are natural features of the formulation. As with thin-wire MoM, degrees of freedom (DoFs) are purely proportional to the electrical length of the wire. Results demonstrate that the intermediate range of “thick wires” is analyzed with practically the same accuracy as general surface MoM, with significantly reduced DoFs. |
| Author | Dommisse, William R. Rylander, Thomas Du Plessis, Jacques T. Botha, Matthys M. Cilliers, Pierre I. |
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| Snippet | This article presents a macro basis function (MBF) formulation for efficient method of moments (MoM) modeling of conducting wires with appreciable thickness.... This article presents a macro basis function (MBF) formulation for efficient method of moments (MoM) modelling of conducting wires with appreciable thickness.... |
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| SubjectTerms | Basis functions Delta-gap source Divergence electric field integral equation (EFIE) electromagnetic scattering Geometry Junctions Method of moments Surface impedance thin-wire approximation Vectors Wire wire radius Wires |
| Title | Macro Basis Functions for Efficient Analysis of Thick Wires in the MoM |
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