Planar Coil Inductor with Closed Magnetic Circuit

H. Matsuki; N. Fujii; K. Shirakawa; J. Toriu; K. Murakami

doi:10.1109/TJMJ.1992.4565426

Planar Coil Inductor with Closed Magnetic Circuit

H. Matsuki, N. Fujii, K. Shirakawa, J. Toriu, K. Murakami

New Industry Creation Hatchery Center (NICHe)

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

8 Citations (Scopus)

Abstract

A break in the electrical or the magnetic path in a conductor or magnetic core is a serious problem for the fabrication of inductors. A planar-coil inductor with a closed magnetic circuit is proposed, and its characteristics are described. The conductor of the planar-coil inductor is patterned on a plane, in order to prevent the occurrence of disconnections in the conductor. To decrease the magnetic resistance, the cross-sections of core junctions, at which there is the risk of disconnection, are regulated. A trial-fabricated inductor consisted of one hundred magnetic cores, each of size 180 μm x 180 μm. The inductor dimensions were 2.3x2.3 mm2. The inductance of the device was 50 nH, and the resonance frequency was about 400 MHz.

Original language	English
Pages (from-to)	474-478
Number of pages	5
Journal	IEEE Translation Journal on Magnetics in Japan
Volume	7
Issue number	6
DOIs	https://doi.org/10.1109/TJMJ.1992.4565426
Publication status	Published - 1992 Jun

ASJC Scopus subject areas

Engineering (miscellaneous)
Engineering(all)

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10.1109/TJMJ.1992.4565426

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abstract = "A break in the electrical or the magnetic path in a conductor or magnetic core is a serious problem for the fabrication of inductors. A planar-coil inductor with a closed magnetic circuit is proposed, and its characteristics are described. The conductor of the planar-coil inductor is patterned on a plane, in order to prevent the occurrence of disconnections in the conductor. To decrease the magnetic resistance, the cross-sections of core junctions, at which there is the risk of disconnection, are regulated. A trial-fabricated inductor consisted of one hundred magnetic cores, each of size 180 μm x 180 μm. The inductor dimensions were 2.3x2.3 mm2. The inductance of the device was 50 nH, and the resonance frequency was about 400 MHz.",

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AU - Matsuki, H.

AU - Fujii, N.

AU - Shirakawa, K.

AU - Toriu, J.

AU - Murakami, K.

PY - 1992/6

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AB - A break in the electrical or the magnetic path in a conductor or magnetic core is a serious problem for the fabrication of inductors. A planar-coil inductor with a closed magnetic circuit is proposed, and its characteristics are described. The conductor of the planar-coil inductor is patterned on a plane, in order to prevent the occurrence of disconnections in the conductor. To decrease the magnetic resistance, the cross-sections of core junctions, at which there is the risk of disconnection, are regulated. A trial-fabricated inductor consisted of one hundred magnetic cores, each of size 180 μm x 180 μm. The inductor dimensions were 2.3x2.3 mm2. The inductance of the device was 50 nH, and the resonance frequency was about 400 MHz.

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Planar Coil Inductor with Closed Magnetic Circuit

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