HIGH-FREQUENCY DEVICE

Title:

HIGH-FREQUENCY DEVICE

Document Type and Number:

Japanese Patent JP2003257739

Kind Code:

A

Abstract:

To provide a high-frequency device, such as the high-frequency inductor, high-frequency transformer, transmission-line device, etc., usable in such a high-frequency band (GHz band) that has been considered to be difficult to be used for the device.

When a microstrip line type transmission line, etc., is constituted by using a laminated film of a ferromagnetic metallic film and an antiferromagnetic thin oxide film, action of the antiferromagnetic thin oxide film as dielectrics can be utilized. At the same time, ferromagnetic resonance frequency of the ferromagnetic metallic film can be raised to a significantly high frequency by inducing large one-directional magnetic anisotropy through ferromagnetic/antiferromagnetic exchange bonding, and an extremely effective means for widening the band of the transmission line can be obtained.

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Inventors:

SATO TOSHIRO
YAMAZAWA KIYOTO
SAKUMA TOSHIYUKI
KARASAWA HIROYOSHI

Application Number:

JP2002054150A

Publication Date:

September 12, 2003

Filing Date:

February 28, 2002

Export Citation:

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Assignee:

KOA CORP
SATO TOSHIRO
YAMAZAWA KIYOTO

International Classes:

H01F17/00; H01F27/00; H01F27/29; H01P3/08; (IPC1-7): H01F17/00; H01F27/00; H01F27/29; H01P3/08

Attorney, Agent or Firm:

Shintaro Hotta (2 outside)

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