Wave transmission lines and networks – Plural channel systems
Patent
1998-02-26
1999-12-28
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
327551, 333 12, H04B 332
Patent
active
060087056
ABSTRACT:
A data transmission system generally comprising a bus with transmission lines, and a signal driver that applies a first signal to a first one of the transmission lines, and applies one or more signals to at least one other of the transmission lines which is adjacent the first transmission line, wherein the second signal has an amplitude proportional to an amplitude of the first signal such that crosstalk between the first and second transmission lines is substantially reduced. The signal driver may take the form of a current mode driver, which provides the compensating (second) signal with a current which is k/c times smaller than the current of the first signal, wherein k is the mutual capacitance between the first and second transmission lines, and c is the capacitance between either of the first or second transmission lines and a ground plane. If the first and second transmission lines are orthogonal, the current mode driver preferably includes differential input lines. The suppression scheme can easily be extended to bidirectional and broadcast buses.
REFERENCES:
patent: 3681612 (1972-08-01), Vogl et al.
patent: 5027088 (1991-06-01), Shimizu et al.
patent: 5815031 (1998-09-01), Tan et al.
Dillon Andrew J.
Gensler Paul
International Business Machines - Corporation
Musgrove Jack V.
Salys Casimer K.
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