Title:
Common mode noise filter
Document Type and Number:
Japanese Patent JP6273498
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a common mode noise filter capable of enhancing attenuation characteristics of common mode noise in a high frequency region.SOLUTION: A common mode noise filter is configured by laminating a first coil conductor 16, a third coil conductor 18, a second coil conductor 17, and a fourth coil conductor 19, in this order from an upper portion. Further, the first coil conductor 16 and the third coil conductor 18 are magnetically coupled to each other to form a first common mode filter unit 20, and the second coil conductor 17 and the fourth coil conductor 19 are magnetically coupled to each other to form a second common mode filter unit 21. The first common mode filter unit 20 and the second common mode filter unit 21 are connected in series and one end portion 14b of a metal conductor 14 is opened and the metal conductor 14 is laminated between the second coil conductor 17 and the third coil conductor 18.SELECTED DRAWING: Figure 1
Inventors:
Yoshiharu Omori
Application Number:
JP2015161025A
Publication Date:
February 07, 2018
Filing Date:
August 18, 2015
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
H01F17/04; H01F17/00; H01F27/00; H03H7/09
Domestic Patent References:
| JP2013191660A | ||||
| JP2008160471A | ||||
| JP2013098259A | ||||
| JP2004165448A | ||||
| JP9260145A | ||||
| JP2013098279A |
Attorney, Agent or Firm:
Kenji Kamada
Hiroo Maeda
Hiroo Maeda