Improving signal integrity in differential signal systems
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United States of America Patent
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Apr 26, 2005
Grant Date -
Apr 10, 2003
app pub date -
Sep 29, 2001
filing date -
Sep 29, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
Over-terminating the differential mode impedance of a differential transmission line, such as an INFINIBAND.TM. cable, at the receiving end, improves the differential signal integrity for typical variations in termination network impedance component (e.g., resistor) and transmission line characteristics. Eye opening of the differential signal can be made larger with reduced attenuation but increased jitter compared to under-terminating the differential mode impedance. Because the differential signal quality (larger eye opening) is improved, data can be transmitted over a longer transmission line with the same transmitter and receiver.
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