Title:
ELECTROMAGNETIC INTERFERENCE PREVENTING COMPONENT AND ELECTRONIC DEVICE USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2006/112468
Kind Code:
A1
Abstract:
An electromagnetic interference preventing component (18) has a high-frequency high-permeability magnetic film in which the real number component (μ') of the permeability at a transmission band frequency of an electronic device (10) incorporating the electromagnetic interference preventing component (18) is equal to or greater than 10, the tan &dgr (=μ'/μ') is equal to or smaller than 0.1, and in which the ferromagnetic resonance frequency (fr) is equal to or greater than 1.5 times the transmission band frequency. The electromagnetic interference preventing component (18) having the high-frequency high-permeability magnetic film as described above is so disposed, in the electronic device (10) having an electromagnetic wave transmitting function, as to selectively reduce the electromagnetic field intensity for the directions in which the electromagnetic waves irradiated by an electromagnetic wave transmitting part such as an antenna (16) or the like are not required.
Inventors:
INOUE TETSUO (JP)
Application Number:
PCT/JP2006/308183
Publication Date:
October 26, 2006
Filing Date:
April 19, 2006
Export Citation:
Assignee:
TOSHIBA KK (JP)
TOSHIBA MATERIALS CO LTD (JP)
INOUE TETSUO (JP)
TOSHIBA MATERIALS CO LTD (JP)
INOUE TETSUO (JP)
International Classes:
H05K9/00; H01F1/00; H01F10/14; H01Q1/52
Domestic Patent References:
| WO2003021610A1 | 2003-03-13 |
Foreign References:
| JP2004281814A | 2004-10-07 | |||
| JP2002199077A | 2002-07-12 | |||
| JP2004128001A | 2004-04-22 | |||
| JP2004165620A | 2004-06-10 | |||
| JP2003297629A | 2003-10-17 | |||
| JP2004153807A | 2004-05-27 |
Attorney, Agent or Firm:
Suyama, Saichi (1 Kandata-cho 2-chom, Chiyoda-ku Tokyo 46, JP)
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