Title:
積層型コモンモードチョークコイル
Document Type and Number:
Japanese Patent JP5700140
Kind Code:
B2
Abstract:
In a common-mode choke coil, first annular conductors are helically defined from the lower layer to the upper layer, and first annular conductors are helically defined from the upper layer to the lower layer. Further, second annular conductors are helically defined from the lower layer to the upper layer, and second annular conductors are helically defined from the upper layer to the lower layer. The first annular conductors and the second annular conductors are disposed alternately in a lamination direction. The first annular conductors and the second annular conductors are disposed such that substantial portions of the annular conductors adjacent to each other in the layer direction do not overlap in a planar view. This structure achieves a compact common-mode choke coil with which the loss of normal-mode signals is small, and which is highly capable of removing common-mode noise.
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Inventors:
Tokiko Kato
Takashi Noma
Tsune Akiyama
Takashi Noma
Tsune Akiyama
Application Number:
JP2013551557A
Publication Date:
April 15, 2015
Filing Date:
December 05, 2012
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
H01F17/00; H01F19/00; H01F27/00; H03H7/09
Domestic Patent References:
| JP2007181169A | ||||
| JP2005064077A | ||||
| JP2004072006A | ||||
| JP3093443U | ||||
| JP2006294724A | ||||
| JP57069714A | ||||
| JP5025816U | ||||
| JP8107023A | ||||
| JP2004228144A | ||||
| JP2007027445A | ||||
| JP11317311A |
Attorney, Agent or Firm:
Kaede International Patent Office