Patent ID: 7411134

Claim:
An electrical mounting board comprising: a substrate having a plurality layers configured such that a substrate core lies between the layers including a first layer and a second layer arranged so that the first layer lies over the second layer; the first layer having a first surface block and a second surface block arranged adjacent to one another and having formed thereon a plurality of electrical ground traces configured in at least two groups arranged in a hybrid configuration so that a first group of electrical ground traces is arranged in a substantially parallel configuration on the first surface block of the first layer, a second group of substantially parallel electrical ground traces is arranged adjacent to the first group of traces on the second surface block of the first layer wherein the first and second groups of traces are not parallel to each other; the second layer having a third surface block and a fourth surface block arranged adjacent to one another and arranged so that the third surface block lies under the first surface block and so that the fourth surface block lies under the second surface block and having formed thereon a plurality of electrical ground traces configured in at least two groups, including a third and fourth group of ground traces arranged in a hybrid configuration so that: the third group of substantially parallel electrical ground traces is arranged on the third surface block underneath the first group of ground traces so that the first group of ground traces criss-crosses over the underlying third group of ground traces; and the fourth group of substantially parallel electrical ground traces is arranged on the fourth surface block underneath the second group of ground traces so that the second group of ground traces criss-crosses over the underlying fourth group of ground traces; and a set of electrically conductive interconnects that pass through the substrate core to electrically connect electrical ground traces of the first layer with electrical ground traces of the second layer to form a multi-layer ground grid having a plurality of ringlets.