Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Makoto Endo0
Date of Patent
May 24, 2011
Patent Application Number
12382395
Date Filed
March 16, 2009
Patent Primary Examiner
Patent 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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