Inductance of a coil in a slotted shield

John C. Young; Chalmers M. Butler

doi:10.1109/TAP.2002.1003383

Inductance of a coil in a slotted shield

John C. Young, Chalmers M. Butler

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

2 Scopus citations

Abstract

The inductance of a coil in a slotted, conducting shell is investigated. At frequencies for which the coil is very small relative to wavelength, an integral equation is formulated and numerically solved for the electric field induced in the slots. From knowledge of the slot electric field, the inductance of the coil in the slotted shell can be calculated. The dependence of inductance on the presence of the slotted shell is assessed quantitatively and explained on the basis of physical principles. The inductance of a one-turn loop inside a slotted shell is measured, and the data are found to be in excellent agreement with computations. As an unslotted shield closes on a coil, inductance is reduced noticeably, but if the shield possesses axial slots, the reduction is much less significant.

Original language	English
Pages (from-to)	475-484
Number of pages	10
Journal	IEEE Transactions on Antennas and Propagation
Volume	50
Issue number	4
DOIs	https://doi.org/10.1109/TAP.2002.1003383
State	Published - Apr 2002

Bibliographical note

Funding Information:
Manuscript received February 29, 2000; revised June 19, 2001. This work was supported by the U.S. Army Research Office under Grants DAAH04-95-1-0247 and DAAG55-98-1-0009 and under a National Science Foundation Graduate Fellowship. The authors are with the Department of Electrical and Computer Engineering, Clemson University, Clemson, SC 29634-0915 USA. Publisher Item Identifier S 0018-926X(02)04961-X.

Keywords

Apertures
Coils
Equations
Inductance
Integral

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/TAP.2002.1003383

Cite this

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title = "Inductance of a coil in a slotted shield",

abstract = "The inductance of a coil in a slotted, conducting shell is investigated. At frequencies for which the coil is very small relative to wavelength, an integral equation is formulated and numerically solved for the electric field induced in the slots. From knowledge of the slot electric field, the inductance of the coil in the slotted shell can be calculated. The dependence of inductance on the presence of the slotted shell is assessed quantitatively and explained on the basis of physical principles. The inductance of a one-turn loop inside a slotted shell is measured, and the data are found to be in excellent agreement with computations. As an unslotted shield closes on a coil, inductance is reduced noticeably, but if the shield possesses axial slots, the reduction is much less significant.",

keywords = "Apertures, Coils, Equations, Inductance, Integral",

author = "Young, {John C.} and Butler, {Chalmers M.}",

note = "Funding Information: Manuscript received February 29, 2000; revised June 19, 2001. This work was supported by the U.S. Army Research Office under Grants DAAH04-95-1-0247 and DAAG55-98-1-0009 and under a National Science Foundation Graduate Fellowship. The authors are with the Department of Electrical and Computer Engineering, Clemson University, Clemson, SC 29634-0915 USA. Publisher Item Identifier S 0018-926X(02)04961-X.",

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AU - Young, John C.

AU - Butler, Chalmers M.

N1 - Funding Information: Manuscript received February 29, 2000; revised June 19, 2001. This work was supported by the U.S. Army Research Office under Grants DAAH04-95-1-0247 and DAAG55-98-1-0009 and under a National Science Foundation Graduate Fellowship. The authors are with the Department of Electrical and Computer Engineering, Clemson University, Clemson, SC 29634-0915 USA. Publisher Item Identifier S 0018-926X(02)04961-X.

PY - 2002/4

Y1 - 2002/4

N2 - The inductance of a coil in a slotted, conducting shell is investigated. At frequencies for which the coil is very small relative to wavelength, an integral equation is formulated and numerically solved for the electric field induced in the slots. From knowledge of the slot electric field, the inductance of the coil in the slotted shell can be calculated. The dependence of inductance on the presence of the slotted shell is assessed quantitatively and explained on the basis of physical principles. The inductance of a one-turn loop inside a slotted shell is measured, and the data are found to be in excellent agreement with computations. As an unslotted shield closes on a coil, inductance is reduced noticeably, but if the shield possesses axial slots, the reduction is much less significant.

AB - The inductance of a coil in a slotted, conducting shell is investigated. At frequencies for which the coil is very small relative to wavelength, an integral equation is formulated and numerically solved for the electric field induced in the slots. From knowledge of the slot electric field, the inductance of the coil in the slotted shell can be calculated. The dependence of inductance on the presence of the slotted shell is assessed quantitatively and explained on the basis of physical principles. The inductance of a one-turn loop inside a slotted shell is measured, and the data are found to be in excellent agreement with computations. As an unslotted shield closes on a coil, inductance is reduced noticeably, but if the shield possesses axial slots, the reduction is much less significant.

KW - Apertures

KW - Coils

KW - Equations

KW - Inductance

KW - Integral

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VL - 50

SP - 475

EP - 484

JO - IEEE Transactions on Antennas and Propagation

JF - IEEE Transactions on Antennas and Propagation

IS - 4

ER -

Inductance of a coil in a slotted shield

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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