Printed circuit board having enhanced EMI suppression

Electricity: conductors and insulators – Conduits – cables or conductors – Preformed panel circuit arrangement

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Details

174250, 174 35R, 361816, H05K 100

Patent

active

054668930

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.

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patent: 4141055 (1979-02-01), Berry et al.
patent: 4404489 (1983-09-01), Larson, III et al.
patent: 4801489 (1987-03-01), Nakagawa et al.
patent: 5025116 (1991-06-01), Kawakami et al.
patent: 5030800 (1991-07-01), Kawakami et al.

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