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Patent Searching and Data


Title:
COMMON MODE NOISE FILTER AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2013/038671
Kind Code:
A1
Abstract:
A common mode noise filter comprising: a first insulation layer; a first coil conductor arranged on the upper surface of the first insulation layer; a second coil conductor arranged on the lower surface of the first insulation layer; a second insulation layer arranged on the upper surface of the first insulation layer so as to cover the first coil conductor, that includes glass and an inorganic filler, and has a plurality of pores distributed internally; and a third insulation layer arranged on the lower surface of the second insulation layer so as to cover the second coil conductor. The first insulation layer includes glass and the inorganic filler, and has a plurality of pores distributed internally. The second insulation layer covers the first coil conductor, includes glass and the inorganic filler, and has a plurality of pores distributed internally. The third insulation layer covers the second coil conductor, includes glass and the inorganic filler, and has a plurality of pores distributed internally. This common mode noise filter is capable of obtaining extremely excellent high-frequency characteristics, at a high yield.

Inventors:
YOSHIDA NORITAKA
Application Number:
PCT/JP2012/005829
Publication Date:
March 21, 2013
Filing Date:
September 13, 2012
Export Citation:
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Assignee:
PANASONIC CORP (JP)
YOSHIDA NORITAKA
International Classes:
H01F17/00
Domestic Patent References:
WO2008093669A12008-08-07
Foreign References:
JP2006303209A2006-11-02
JP2004235494A2004-08-19
JP2010206089A2010-09-16
JP2008300432A2008-12-11
JP2010098199A2010-04-30
JP2011003567A2011-01-06
Attorney, Agent or Firm:
NAITO, Hiroki et al. (JP)
Hiroki Naito (JP)
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