Article comprising an inductive element with a magnetic thin fil

Details Article comprising an inductive element with a magnetic thin fil Article comprising an inductive element with a magnetic thin fil

1997-07-30

1998-12-08

Gellner, Michael L.

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

336177, 336234, 336178, H01F 500, H01F 2724, H01F 1706

Patent

active

058476342

ABSTRACT:
A thin film inductive element according to this invention comprises an elongate conductor, and spaced apart magnetic strips that substantially surround the conductor, with dielectric material between the magnetic strips and the conductor. The inductive element can have relatively high inductance and low loss, can be used in linear form, meander on spiral form, or any other desired form, is suitable for use at RF frequencies, and can be integrated with conventional circuitry. Criteria for choosing the length of the magnetic strips and the thickness of the dielectric are disclosed.

REFERENCES:
patent: 5420558 (1995-05-01), Ito et al.
patent: 5450755 (1995-09-01), Saito et al.
"Characteristics and Analysis of a Thin Film Inductor with Closed Magnetic Circuit Structure", by M. Yamaguchi et al., IEEE Transactions on Magnetics, vol. 28, No. 5, Sep. 1992, pp. 3015-3017.
"High Frequency Measurement Technique for Patterned Soft Magnetic Film Permeability with Magnetic Film/Conductor/Magnetic Film Inductance Line", by M. Senda et al., Review of Scientific Instruments, vol. 64(4), Apr. 1993, pp. 1034-1037.
"High Frequency Magnetic Properties of CoFe/SiO.sub.2 Multilayer Film with the Inverse Magnetostrictive Effect", M. Senda et al., IEEE Transactions on Magnetics, vol. 30, 1994, p. 155.

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