Patent ID: 8212630
Filing Date: 2012-07-03
Classification: H01F,H01P

Abstract:
1. A thin film balun comprising: an unbalanced transmission line having a first line portion and a second line portion; a balanced transmission line having a third line portion and a fourth line portion which are arranged so as to face the first line portion and the second line portion, respectively; an unbalanced terminal connected to the first line portion; a ground terminal connected to the second line portion via a C component; a first balanced terminal connected to the third line portion; and a second balanced terminal connected to the fourth line portion, wherein: the first line portion and the third line portion form a first magnetic coupling; the second line portion and the fourth line portion form a second magnetic coupling; and at least a part or the entire of the C component overlaps with wiring of the second line portion and/or with wiring of the fourth line portion in a plan view.