Printed inductor capable of raising Q value

Inductor devices – Coil or coil turn supports or spacers – Printed circuit-type coil

Reexamination Certificate

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Details

C336S232000, C336S223000

Reexamination Certificate

active

06992557

ABSTRACT:
There is disclosed a printed inductor1having a spiral coil formed outside a cavity2by providing an insulating substrate3with the cavity2extending in a direction orthogonal to that of the thickness of the insulating substrate3, forming a plurality of mutually independent printed wiring lines4on both the top and bottom faces of the insulating substrate3facing each other through the cavity2, and sequentially and continuously connecting terminals of the printed wiring lines4on both the top and bottom faces to each other through a plurality of through holes5.

REFERENCES:
patent: 3988764 (1976-10-01), Cline et al.
patent: 4729510 (1988-03-01), Landis
patent: 6054750 (2000-04-01), Imam et al.
patent: 6249039 (2001-06-01), Harvey et al.
patent: 6531945 (2003-03-01), Ahn et al.
patent: 2002/0105406 (2002-08-01), Liu et al.
patent: 07-272932 (1995-10-01), None

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