04047132 is referenced by 36 patents and cites 3 patents.

The present invention is concerned with multilayer printed circuit boards which have more than a single plane of interconnection conductors spaced away from a common plane, such as an earth or power plane. In such a case the conductors of the interconnection layers form transmission lines having respectively different impedances, depending on their distances from the common plane. The invention contemplates a pattern of conductive areas distributed over one of the surfaces of the multilayer board, the surface chosen lying on the opposite side of the planes of conductors from the common plane, the pattern configuration being chosen more nearly to equalize the impedances of the conductors. The areas of the pattern are preferably connected to the common plane.

Title
Multilayer printed circuit boards
Application Number
5/698021
Publication Number
4047132
Application Date
June 21, 1976
Publication Date
September 6, 1977
Inventor
Ignacy Krajewski
Poynton
EN
Agent
Hane Sullivan & Spiecens
Assignee
International Computers
EN
IPC
H01P 3/08
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