Time-domain near-field analysis of short-pulse antennas-part I: spherical wave (multipole) expansion

Amir Shlivinski; E. Heyman

doi:10.1109/8.761066

Time-domain near-field analysis of short-pulse antennas-part I: spherical wave (multipole) expansion

Amir Shlivinski, E. Heyman

Research output: Contribution to journal › Article › peer-review

70 Scopus citations

Abstract

The radiation from a time-dependent source distribution in free-space is analyzed using time-domain (TD) spherical wave (multipole) expansion. The multipole moment functions are calculated from the time-dependent source distribution. The series convergence rate in the near and far zone and the bounds on the near-zone reactive field are determined as functions of the source support and of the pulse length. The formulation involves a spherical transmission line representation that can be extended to more general spherical configurations. This formulation also describes the field and energy transmission mechanisms in a physically transparent fashion that will be used in a companion paper to define and explore fundamental concepts such as TD reactive energy and Q and to derive bounds on the antenna properties. Finally, the concepts discussed above are demonstrated numerically for pulsed radiation by a circular current disk.

Original language	English
Pages (from-to)	271-279
Number of pages	9
Journal	IEEE Transactions on Antennas and Propagation
Volume	47
Issue number	2
DOIs	https://doi.org/10.1109/8.761066
State	Published - 1 Dec 1999
Externally published	Yes

Keywords

Antenna theory
Near field
Short-pulse electromagnetics
Time-domain analysis

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/8.761066

Cite this

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title = "Time-domain near-field analysis of short-pulse antennas-part I: spherical wave (multipole) expansion",

abstract = "The radiation from a time-dependent source distribution in free-space is analyzed using time-domain (TD) spherical wave (multipole) expansion. The multipole moment functions are calculated from the time-dependent source distribution. The series convergence rate in the near and far zone and the bounds on the near-zone reactive field are determined as functions of the source support and of the pulse length. The formulation involves a spherical transmission line representation that can be extended to more general spherical configurations. This formulation also describes the field and energy transmission mechanisms in a physically transparent fashion that will be used in a companion paper to define and explore fundamental concepts such as TD reactive energy and Q and to derive bounds on the antenna properties. Finally, the concepts discussed above are demonstrated numerically for pulsed radiation by a circular current disk.",

keywords = "Antenna theory, Near field, Short-pulse electromagnetics, Time-domain analysis",

author = "Amir Shlivinski and E. Heyman",

note = "Funding Information: Manuscript received September 30, 1997; revised May 4, 1998. This work was supported in part by the U.S. Air Force Office of Scientific Research under Grant 96-1-0039 and by the Israel Science Foundation under Grants 574/95 and 404/98. The authors are with the Department of Electrical Engineering, Physical Electronics, Tel-Aviv University, Tel-Aviv, 69978 Israel. Publisher Item Identifier S 0018-926X(99)03731-X.",

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AU - Shlivinski, Amir

AU - Heyman, E.

N1 - Funding Information: Manuscript received September 30, 1997; revised May 4, 1998. This work was supported in part by the U.S. Air Force Office of Scientific Research under Grant 96-1-0039 and by the Israel Science Foundation under Grants 574/95 and 404/98. The authors are with the Department of Electrical Engineering, Physical Electronics, Tel-Aviv University, Tel-Aviv, 69978 Israel. Publisher Item Identifier S 0018-926X(99)03731-X.

PY - 1999/12/1

Y1 - 1999/12/1

N2 - The radiation from a time-dependent source distribution in free-space is analyzed using time-domain (TD) spherical wave (multipole) expansion. The multipole moment functions are calculated from the time-dependent source distribution. The series convergence rate in the near and far zone and the bounds on the near-zone reactive field are determined as functions of the source support and of the pulse length. The formulation involves a spherical transmission line representation that can be extended to more general spherical configurations. This formulation also describes the field and energy transmission mechanisms in a physically transparent fashion that will be used in a companion paper to define and explore fundamental concepts such as TD reactive energy and Q and to derive bounds on the antenna properties. Finally, the concepts discussed above are demonstrated numerically for pulsed radiation by a circular current disk.

AB - The radiation from a time-dependent source distribution in free-space is analyzed using time-domain (TD) spherical wave (multipole) expansion. The multipole moment functions are calculated from the time-dependent source distribution. The series convergence rate in the near and far zone and the bounds on the near-zone reactive field are determined as functions of the source support and of the pulse length. The formulation involves a spherical transmission line representation that can be extended to more general spherical configurations. This formulation also describes the field and energy transmission mechanisms in a physically transparent fashion that will be used in a companion paper to define and explore fundamental concepts such as TD reactive energy and Q and to derive bounds on the antenna properties. Finally, the concepts discussed above are demonstrated numerically for pulsed radiation by a circular current disk.

KW - Antenna theory

KW - Near field

KW - Short-pulse electromagnetics

KW - Time-domain analysis

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JO - IEEE Transactions on Antennas and Propagation

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ER -

Time-domain near-field analysis of short-pulse antennas-part I: spherical wave (multipole) expansion

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Keywords

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