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US 10,484,748 B2Granted
Upstream noise suppression circuits and related radio frequency subscriber drop equipment and methods
AssigneeCommScope, Inc.
InventorMark E. Alrutz
Life of this patent
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Abstract
Upstream noise suppression circuits include a splitter and a combiner that are connected by first and second communications paths. An information signal removal circuit is provided on the second communications path and is configured to remove an upstream information signal therefrom. A phase shifter is also provided on the second communications path between the upstream information signal removal circuit and the combiner.
Claims12
A method of reducing upstream noise funneling in a communications network, comprising:
- splitting an upstream signal into a first component that is transmitted over a first communications path and a second component that is transmitted over a second communications path, the second component including an information signal and a noise signal;
- removing the information signal from the second component while retaining at least a portion of the noise signal of the second component to provide a modified second component;
- phase shifting the modified second component;
- and
- combining the first component and the phase-shifted modified second component;
- wherein removing the information signal from the second component while retaining at least a portion of the noise signal of the second component to provide a modified second component comprises:
- detecting the presence of the information signal;
- terminating the second communications path in response to detecting the presence of the information signal;
- and
- reestablishing the second communications path in response to detecting the absence of the information signal.
7 more elements
Dependencies are inferred from the claim text.