Printed circuit board with enhanced EMI suppression

Details Printed circuit board with enhanced EMI suppression Printed circuit board with enhanced EMI suppression

1990-02-08

1994-08-23

Picard, Leo P.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

174 35R, 361816, 428901, 439109, H05K 900

Patent

active

053412745

ABSTRACT:
The radiation noise suppression effect is enhanced by providing an insulation layer which is formed so that the circuit pattern is covered excepting at least a part of power source pattern or ground pattern on the substrate on which circuit pattern is formed, and a conductive layer which is formed so as to be connected to the uninsulated part of the power source pattern or the ground pattern on the insulation layer, by modifying pattern shape of the conductive layer and the insulation layer or by increasing or reducing the number of these layers.

REFERENCES:
patent: 3740678 (1973-06-01), Hill
patent: 4551789 (1985-11-01), Schettler et al.
patent: 4717988 (1988-01-01), Landis
patent: 4723197 (1988-02-01), Takiar et al.
patent: 4770921 (1988-09-01), Wacker et al.
patent: 4801489 (1989-01-01), Nakagawa et al.
patent: 4827083 (1989-05-01), Inasaka et al.
patent: 4927983 (1990-05-01), Jones et al.
patent: 4963697 (1990-10-01), Peterson et al.
patent: 5043526 (1991-08-01), Nakagawa et al.

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