Method and device for injecting a differential current noise signal into a paired wire communication link
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United States of America Patent
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May 6, 2008
Grant Date -
Sep 21, 2006
app pub date -
Dec 15, 2004
filing date -
Dec 15, 2004
priority date (Note) -
Expired
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Abstract
The present invention relates to a device and method for injecting a noise signal into a wire pair of a communication link. In operation a first current source and a second current source are disposed in series with a node therebetween coupled resistively to a wire of the wire pair. A current flow path is provided for balancing the current from the two current sources. A similar circuit is also coupled to the other wire of the wire pair.
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