Inductor circuit board, method of forming inductor, and...

Details Inductor circuit board, method of forming inductor, and... Inductor circuit board, method of forming inductor, and...

2007-01-17

2008-11-04

Tran, Anh Q (Department: 2819)

Wave transmission lines and networks

Long line elements and components

Strip type

C333S245000, C333S185000

Reexamination Certificate

active

07446633

ABSTRACT:
An inductor circuit board that is made compatible with broadband by reducing parasitic capacitance of an inductor. The inductor circuit board is comprised of a flexible substrate made of a material, such as polyimide or liquid polymer, a transmission line formed on the flexible substrate, and an inductor. The inductor has a three-dimensional conical structure in which component inductors having different inductances are continuously connected to each other, with one end thereof connected to a portion of the transmission line between an input end and an output end thereof, and is formed according to a transmission line pattern by wiring on a plurality of surface layers of the flexible substrate and connecting portions wired on the surface layers by vias that connect between the layer surfaces of the substrate, such that the inductor is expanded in a fan-like manner as it is farther from the one end connected to the transmission line. A portion of the indictor closer to the transmission line has a smaller inductance, and a portion of the same farther from the transmission line has a larger inductance.

REFERENCES:
patent: 2007/0085648 (2007-04-01), Lee et al.
patent: 2007/0164843 (2007-07-01), Yagisawa et al.
patent: 2007/0236319 (2007-10-01), Hsu et al.
Partial English Translation of JP 2004-193886 A (2 pp).

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