Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1998-04-03
2000-01-18
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
Having branched circuits
330258, 333 12, 333 24R, H01P 518
Patent
active
060160861
ABSTRACT:
A bus for high signal quality interconnections, comprising means for producing at least one common mode reflection, often for differential transmission line interconnections. Also, a bus for high signal quality interconnections further comprising means for under-damping the signal and/or reducing the common mode noise. In both cases the means are at least one impedance termination. To produce common mode reflections, there are non-contact couplers terminated by short and open circuits, which cause the reflections from via connectors and other like impedance discontinuities to be re-reflected in common mode so that they are rejected by a differential receiver. To produce under-damping of the signal and/or a reduction of the common mode noise, capacitive terminations are used. The under-damping of the signal sharpens in the falling edge of the coupler pulses.
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Hideki Osaka, Masaya Umemura and Akira Yamagiwa, 1 GT/s Back Plane Bus (XTL: Crosstalk Transfer Logic) using Crosstalk Mechanism, Hot Interconnects Symposium V 1997, Stanford University, California, USA, Aug. 21-23, 1997.
Brown Anthony K. Dale
Guterman Alexandre J.
Newell Terry
Williamson John M.
Zani Robert
Gensler Paul
Nortel Networks Corporation
O'Neill T. Gary
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