Patent ID: 8191241

Claim:
A method of manufacturing a multi-turn coil device comprising the steps of: a. forming a flexible circuit board having a first side, and a second side on the opposite side of the flexible circuit board as the first side when the flexible circuit board is unfolded; b. forming a plurality of serially electrically coupled coils coupled to the flexible circuit board, each coil having a coil direction, wherein the coils are positioned such that each coil substantially overlaps each of the other coils when the flexible circuit board is folded; and c. forming one or more conductive paths from the first side to the second side of the flexible circuit board, wherein one or more coils of the plurality of serially electrically coupled coils are coupled to the second side, and wherein at least one coil of the plurality of serially electrically coupled coils on the first side is electrically coupled to an opposing coil of the plurality of serially electrically coupled coils on the second side through the one or more conductive paths when the flexible circuit board is unfolded.