Signal splitter/combiner for reducing noise ingress and...

Details Signal splitter/combiner for reducing noise ingress and... Signal splitter/combiner for reducing noise ingress and...

2005-08-16

2010-06-29

Pascal, Robert J. (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S126000, C333S129000, C333S132000

Reexamination Certificate

active

07746194

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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