Electronic circuit card assembly having confined ground path ret

Details Electronic circuit card assembly having confined ground path ret Electronic circuit card assembly having confined ground path ret

1998-11-03

2000-05-02

Picard, Leo P.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

361685, 361788, 361799, 174 51, 439 61, 3122231, 3122232, H05K 502

Patent

active

060580194

ABSTRACT:
An electronic system contains a backplane circuit card assembly for distribution of electrical signals among component devices. Power is distributed in embedded power planes, one of which is associated with ground. The backplane also contains multiple embedded ground planes. The circuit card assembly is divided by an axis into two halves, each half receiving and consuming approximately equal power. Electrical couplings for power sources and power planes in each half of the backplane are located symmetrically with respect to the axis. A row of ground vias along the axis couples the ground planes to the associated power plane. At all other locations on the backplane, the ground planes are electrically isolated from the associated power plane. Preferably, the backplane assembly comprises a pair of base cards, connected by a single smaller jumper card in which all ground vias are located. Each base card lies on a respective side of the axis, the jumper straddling the axis. The exemplary embodiment is an intelligent redundant array of independent disks (RAID) storage server having concurrent maintenance capability.

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