Comparison and results for models of a thick bent-wire dipole using NEC4 and WIPL

James Stamm; Mun Won Fenton; James Kenneth Breakall

Comparison and results for models of a thick bent-wire dipole using NEC4 and WIPL

James Stamm, Mun Won Fenton, James Kenneth Breakall

Research output: Contribution to conference › Paper › peer-review

Abstract

Modeling of moderately thick wires can often involve feedpoint effects, which may or may not be handled properly when compared to actual physical construction and experimental measurements. In this paper, it is shown that attaching the two feedpoint wires on one side of a hollow cylindrical tube in the form of a dipole will introduce a frequency shift in the impedance or VSWR from what NEC4 would compute. A code such as WIPL, which uses a combination of plates and wires in an EFIE approach, is shown to produce results which are correlated well with experimental measurements of the physical dipole. Finally, this paper shows that a correction factor in length can be implemented to produce equivalence with NEC4 results even for bent stubs at the end of the dipole. This has implications in using codes such as NEC4 for optimization in arrays and construction of physical antenna elements.

Original language	English (US)
Pages	436-441
Number of pages	6
State	Published - Jan 1 1999
Event	Proceedings of the 1999 ACES 15th Annual Review of Progress in Applied Computational Electromagnetics - Monterey, CA, USA Duration: Mar 15 1999 → Mar 20 1999

Conference

Conference	Proceedings of the 1999 ACES 15th Annual Review of Progress in Applied Computational Electromagnetics
City	Monterey, CA, USA
Period	3/15/99 → 3/20/99

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

Cite this

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title = "Comparison and results for models of a thick bent-wire dipole using NEC4 and WIPL",

abstract = "Modeling of moderately thick wires can often involve feedpoint effects, which may or may not be handled properly when compared to actual physical construction and experimental measurements. In this paper, it is shown that attaching the two feedpoint wires on one side of a hollow cylindrical tube in the form of a dipole will introduce a frequency shift in the impedance or VSWR from what NEC4 would compute. A code such as WIPL, which uses a combination of plates and wires in an EFIE approach, is shown to produce results which are correlated well with experimental measurements of the physical dipole. Finally, this paper shows that a correction factor in length can be implemented to produce equivalence with NEC4 results even for bent stubs at the end of the dipole. This has implications in using codes such as NEC4 for optimization in arrays and construction of physical antenna elements.",

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AU - Stamm, James

AU - Fenton, Mun Won

AU - Breakall, James Kenneth

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AB - Modeling of moderately thick wires can often involve feedpoint effects, which may or may not be handled properly when compared to actual physical construction and experimental measurements. In this paper, it is shown that attaching the two feedpoint wires on one side of a hollow cylindrical tube in the form of a dipole will introduce a frequency shift in the impedance or VSWR from what NEC4 would compute. A code such as WIPL, which uses a combination of plates and wires in an EFIE approach, is shown to produce results which are correlated well with experimental measurements of the physical dipole. Finally, this paper shows that a correction factor in length can be implemented to produce equivalence with NEC4 results even for bent stubs at the end of the dipole. This has implications in using codes such as NEC4 for optimization in arrays and construction of physical antenna elements.

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Comparison and results for models of a thick bent-wire dipole using NEC4 and WIPL

Abstract

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All Science Journal Classification (ASJC) codes

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