Reducing electromagnetic noise radiated from a printed board

H - Electricity – 05 – K

Patent

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Details

H05K 1/16 (2006.01) H05K 1/02 (2006.01)

Patent

CA 2237923

A printed board has at least two conductor layers including a power supply layer and a ground layer, and a spiral coil inductor disposed in opposite ones of the conductor layers. The spiral coil inductor has a terminal connected to a power supply line of the power supply layer, and another terminal connected to a device power terminal disposed on one of the conductor layers and to be connected to a power supply terminal of a circuit device and a terminal of a decoupling capacitor. A device ground terminal is disposed on one of the conductor layers and to be connected to a ground terminal of the circuit device and another terminal of the decoupling capacitor, the device ground terminal being connected to a ground line of the ground layer.

Circuit imprimé comprenant au moins deux couches de conducteurs, dont une couche d'alimentation et une couche de masse, et une inductance spirale disposée dans les couches de conducteurs opposées. L'inductance spirale a une borne connectée à une ligne d'alimentation électrique de la couche d'alimentation, et une autre borne connectée à une borne d'alimentation d'un élément de circuit disposé sur une des couches de conducteurs et à raccorder à une borne d'alimentation d'un élément de circuit et à une borne d'un condensateur de découplage. Une borne de masse d'élément de circuit est disposée sur une des couches de conducteurs et destinée à être connectée à une borne de masse de l'élément de circuit et à une autre borne du condensateur de découplage, la borne de masse de l'élément de circuit étant connectée à une ligne de masse de la couche de masse.

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