Patent ID: 8130068
Filing Date: 2012-03-06
Classification: H01F

Abstract:
1. A planar transformer, comprising: a first planar inductor and a second planar inductor, wherein each of said planar inductors comprises, in the same manner, a plurality of flat coils, a flat coil carry layer which carries said flat coils arrayed in a plane, a first interconnection layer provided on one side of the flat coil carry layer, and a second interconnection layer provided on the other side of the flat coil carry layer, wherein a start point of the each flat coil is connected through the first interconnection layer and an end point of the each flat coil is connected through the second interconnection layer, and the each flat coil comprises a conductor pattern, said conductor pattern is formed into a rhombic pattern in which an equilateral triangle clockwise spiral conductor pattern is serially connected with an equilateral triangle counterclockwise spiral conductor pattern sharing a base line between the conductor patterns, whereby a power transmission and/or a signal transmission between said planar inductors using magnetic coupling is conducted by positioning the first planar inductor and the second planar inductor facing each other.