Symmetrical inductor

Details Symmetrical inductor Symmetrical inductor

2007-12-25

2007-12-25

Mai, Anh (Department: 2832)

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

C336S223000, C336S232000

Reexamination Certificate

active

11673613

ABSTRACT:
An inductor comprises first and second winding portions symmetrically arranged in an insulating layer on a substrate. Each winding portion comprises first, second and third semicircular conductive traces arranged in concentricity from the inside to the outside. Each semicircular conductive trace has first and second ends, in which the first ends of the first semicircular conductive traces of the first and second winding portions are coupled to each other. A coupling portion comprises a first pair of connection layers cross-connecting the first ends of the second and third semicircular conductive traces of both winding portions and a second pair of connection layers cross-connecting the second ends of the first and second semicircular conductive traces of both winding portions. The adjacent semicircular conductive traces of each winding portion have a trace line space therebetween and the relatively outer trace line space is wider than the relatively inner trace line space.

REFERENCES:
patent: 6002161 (1999-12-01), Yamazaki
patent: 6380835 (2002-04-01), Lee
patent: 7057488 (2006-06-01), Van Haaren et al.
patent: 7068140 (2006-06-01), Chou
patent: 7259649 (2007-08-01), Ancey et al.

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