Signal splitter/combiner for reducing noise ingress and cable television network incorporating plurality of same
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United States of America Patent
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Jun 29, 2010
Grant Date -
Feb 15, 2007
app pub date -
Aug 16, 2005
filing date -
Aug 12, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A signal splitter comprising an input and a plurality of outputs is provided, wherein alternate outputs are connected to phase shifting devices. The phase shifting devices preferably comprise phase shifting transformers and introduce a phase shift of 180°, so that noise components of alternate outputs are antiphase and cancel one another out almost entirely when the signals are summed. Also provided is a cable television network comprising a plurality of such signal splitters to ensure that noise ingress in upstream signals passing into the network is substantially reduced.
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