Multilayer printed circuit board with pseudo-coaxial transmissio

Details Multilayer printed circuit board with pseudo-coaxial transmissio Multilayer printed circuit board with pseudo-coaxial transmissio

1989-12-04

1991-03-26

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

174117FF, 333243, H01P 318

Patent

active

050032739

ABSTRACT:
A multilayer printed circuit board has a plurality of planar layers formed with signal conductor lines and return lines grouped around the conductor lines to form pseudo-coaxial transmission lines. The return lines are grouped symmetrically around each signal line, e.g. two, four, or eight return lines at circumferential positions around each signal line. Ground and power planes may be formed with the multilayer structure for shielding and/or for powering electronic components mounted on the structure. The multilayer techniques can also be used to form a multilayer extender card which minimizes crosstalk and is reduced in cost and assembly time as compared to conventional extender boards.

REFERENCES:
patent: 3612744 (1971-10-01), Thomas
patent: 4047132 (1977-09-01), Krajewski
patent: 4673904 (1987-06-01), Landis
patent: 4776087 (1988-10-01), Cronin et al.
patent: 4845311 (1989-07-01), Schreiber et al.

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