Laminate printed circuit board with a magnetic layer

Details Laminate printed circuit board with a magnetic layer Laminate printed circuit board with a magnetic layer

1998-03-02

2000-08-29

Bettendorf, Justin P.

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333185, 361780, H03H 701

Patent

active

061114790

ABSTRACT:
A laminate printed circuit board loaded with transistors, ICs (Integrated Circuits) or LSIs (Large Scale Integrated Circuits) and a method of producing the same are disclosed. The circuit board includes a signal layer, a ground layer and a power supply layer sequentially laminated with the intermediary of insulation layers. An impedance adding circuit is formed in the power supply layer. A magnetic layer is positioned at least above or at least blow the impedance adding circuit. The circuit board with this configuration reduces power supply noise to a noticeable degree.

REFERENCES:
patent: 4746557 (1988-05-01), Sakamoto et al.
patent: 5157576 (1992-10-01), Takaya et al.
patent: 5165055 (1992-11-01), Metsler

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