Embedded toroidal inductors

Details Embedded toroidal inductors Embedded toroidal inductors

2007-08-07

2007-08-07

Mai, Anh (Department: 2832)

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

C336S232000, C336S223000, C029S602100

Reexamination Certificate

active

11041328

ABSTRACT:
A method for making an embedded toroidal inductor (118) includes forming in a ceramic substrate (100) a first plurality of conductive vias (102) radially spaced a first distance from a central axis (101) so as to define an inner circumference. A second plurality of conductive vias (104) is formed radially spaced a second distance about the central axis so as to define an outer circumference. A first plurality of conductive traces (110) forming an electrical connection between substantially adjacent ones of the first and second plurality of conductive vias is formed on a first surface (106) of the ceramic substrate. Further, a second plurality of conductive traces (110) forming an electrical connection between circumferentially offset ones of the first and second plurality of conductive vias is formed on a second surface of the ceramic substrate opposed from the first surface to define a three dimensional toroidal coil.

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