Printed circuit with laterally displaced ground and signal condu

Details Printed circuit with laterally displaced ground and signal condu Printed circuit with laterally displaced ground and signal condu

1977-10-18

1978-12-19

Askin, Laramie E.

Electricity: conductors and insulators

Conduits, cables or conductors

Single duct conduits

174117PC, 333 84M, H05K 102

Patent

active

041307232

ABSTRACT:
A printed circuit mother board, for interconnecting the respective edge connectors of a plurality of other printed circuit boards having digital circuitry thereon, has a set of generally straight, approximately parallel tracks on each side. Each set of tracks comprises alternate signal tracks and ground tracks, and the ground tracks of each set are interconnected with each other to approximate to a ground plane. Additionally, the tracks on one side of the board are slightly laterally displaced with respect to the tracks on the other side, so that each signal track on either side is opposite a ground track on the other side. The possibility of interference between signals carried by the signal tracks is thus reduced, and the board has transmission line characteristics.

REFERENCES:
patent: 3093805 (1963-06-01), Osifchin
patent: 3459879 (1969-08-01), Gerpheide
patent: 3461552 (1969-08-01), Wolf
patent: 3568312 (1971-03-01), Perricone
patent: 3876964 (1975-04-01), Balaster et al.

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