Patent ID: 7518480

Claim:
An inductive element comprising: a printed circuit board (PCB) inner core comprising: a non-conducting layer having at least one inner hole and a plurality of outer holes disposed about the at least one inner hole; and a metallic spiral pattern laminated to the non-conducting layer, such that the metallic spiral pattern encircles the at least one inner hole and the plurality of outer holes is distributed about the metallic spiral pattern such that the plurality of outer holes completely encircles the metallic spiral pattern; and non-conductive high magnetic permeability material substantially covering both sides of the PCB inner core and substantially filling the at least one inner hole and the plurality of outer holes, such that the non-conducting layer and the non-conductive high magnetic permeability material substantially completely surround the metallic spiral pattern, and the non-conductive high magnetic permeability material provides at least one contiguous magnetic path through the at least one inner hole, over the metallic spiral pattern, through the plurality of outer holes, and under the metallic spiral pattern.