Title:
薄膜バラン
Document Type and Number:
Japanese Patent JP5240669
Kind Code:
B2
Abstract:
There is provided a thin film balun which, while incorporating a capacitor used to supply a DC bias, allows improvement of various required characteristics. A thin film balun according to the present embodiment includes: an unbalanced transmission line which includes two first coils; a balanced transmission line which includes two second coils and which magnetically couples with the unbalanced transmission line; a capacitor having one end connected to the balanced transmission line; and a ground terminal connected to the other end of the capacitor. The capacitor is disposed to have a region which does not overlap a part of coil openings defined by the first coils and the second coils.
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Inventors:
Makoto Endo
Application Number:
JP2009057523A
Publication Date:
July 17, 2013
Filing Date:
March 11, 2009
Export Citation:
Assignee:
tdk Corporation
International Classes:
H01F19/06; H01F17/00; H01F27/00; H01P5/10; H03H7/42
Domestic Patent References:
| JP2005333012A | ||||
| JP2006025237A | ||||
| JP2003007537A |
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Takuji Fukasawa
Toshifumi Onuki
Takuji Fukasawa