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Magnetic-multi-turn planar coil inductor

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5 Author(s)
H. Matsuki ; Dept. of Electr. Eng., Tohoku Univ., Sendai, Japan ; N. Fujii ; K. Shirakawa ; J. Toriu
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A miniaturized thin film inductor whose magnetic core is wound around the conductor is proposed. The dimensions of the inductors are 2.3 mm×2.3 mm, and these inductors are used at a frequency range above 100 MHz. The conductor is patterned on a plane, keeping contact resistance low. The magnetic core is designed for keeping a closed magnetic path even in the case of disconnection on the magnetic core. For diminishing the copper loss, a pattern for inductors which shortens the length of the conductor is discussed

Published in:

IEEE Transactions on Magnetics  (Volume:27 ,  Issue: 6 )