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US 9,093,791 B2Granted
Communications connectors having crosstalk stages that are implemented using a plurality of discrete, time-delayed capacitive and/or inductive components that may provide enhanced insertion loss and/or return loss performance
AssigneeCommScope, Inc. of North Carolina
InventorHongwei Liang
Life of this patent
Estimating the term…
Abstract
Communications connectors include a plurality of “discrete” elements to implement the capacitive and/or inductive components of offending and/or compensatory crosstalk stages. By sub-dividing the crosstalk stages into a plurality of time-delayed discrete elements improved return loss and insertion loss may be achieved for very high frequency signals, without having a substantial impact on the crosstalk performance of the connector.
Claims20
A communications plug, comprising:
- a plug housing;
- eight plug blades that are arranged as first through fourth differential pairs of plug blades that are configured to mate with the contacts of a mating communications jack;
- a first differential pair of conductive paths within the plug housing that are electrically connected to the first differential pair of plug blades;
- a second differential pair of conductive paths within the plug housing that are electrically connected to the second differential pair of plug blades;
- a first capacitor that is configured to inject crosstalk having a first polarity from the first differential pair of conductive paths to the second differential pair of conductive paths;
- a second capacitor that is separate from the first capacitor, the second capacitor configured to inject crosstalk having the first polarity from the first differential pair of conductive paths to the second differential pair of conductive paths, wherein the first and second capacitors are configured to inject crosstalk at respective first and second points in time onto the second differential pair, wherein the first and second points in time are different;
- and
- a third capacitor that is separate from the first and second capacitors, the third capacitor configured to inject crosstalk having the first polarity from the first differential pair to the second differential pair, wherein the third capacitor is configured to inject crosstalk at a third point in time onto the second differential pair, wherein the third point in time is different than both the first and second points in time,
- wherein the first capacitor, the second capacitor and the third capacitor are implemented separately from the plug blades.
6 more elements
A mated communications plug and communications jack, comprising:
- a communications plug comprising:
- a plug housing;
- a first differential pair of conductive paths within the plug housing;
- a second differential pair of conductive paths within the plug housing;
- a first capacitor that is configured to inject crosstalk having a first polarity from the first differential pair to the second differential pair;
- a second capacitor that is separate from the first capacitor, the second capacitor configured to inject crosstalk having the first polarity from the first differential pair to the second differential pair, wherein the first and second capacitors are configured to inject crosstalk at respective first and second points in time onto a signal travelling on the second differential pair, wherein the first and second points in time are different;
- and
- a communications jack comprising:
- a third differential pair of conductive paths that is electrically connected to the first differential pair of conductive paths to form a first communications channel through the mated communications plug and jack;
- a fourth differential pair of conductive paths that is electrically connected to the second differential pair of conductive paths to form a second communications channel through the mated communications plug and jack;
- a third capacitor that is configured to inject crosstalk having a second polarity from the third differential pair to the fourth differential pair, the second polarity being opposite the first polarity;
- and
- a fourth capacitor that is configured to inject crosstalk having the second polarity from the third differential pair to the fourth differential pair, wherein the third and fourth capacitors are configured to inject crosstalk at respective third and fourth points in time onto a signal travelling on the fourth differential pair, wherein the third and fourth points in time are different.
10 more elements
A mated plug jack connector, comprising:
- a communications jack having a housing that includes a plug aperture and at least a first differential pair of conductive paths and a second differential pair of conductive paths;
- a communications plug that is received within the plug aperture of the communications jack, the communications plug having a third differential pair of conductive paths that electrically connect to the first differential pair of conductive paths of the jack and a fourth differential pair of conductive paths that electrically connect to the second differential pair of conductive paths of the jack;
- wherein the communications plug includes an offending crosstalk stage that injects crosstalk having a first polarity between the third differential pair of conductive paths and the fourth differential pair of conductive paths, the offending crosstalk stage including at least separate first and second capacitive components that are time-delayed with respect to each other, the first and second capacitive components comprising first and second capacitors that are implemented in a printed circuit board of the communications plug;
- and
- wherein the communications jack includes a compensating crosstalk stage that injects crosstalk between the first differential pair of conductive paths and the second differential pair of conductive paths that includes at least separate third and fourth capacitive components that have the same polarity that are time-delayed with respect to each other.
2 more elements
A communications connector, comprising:
- a plurality of input ports;
- a plurality of output ports;
- a plurality of differential pairs of conductive paths that extend between respective pairs of the input ports and respective pairs of the output ports;
- a crosstalk injection circuit that injects crosstalk between a first of the differential pairs of conductive paths and a second of the differential pairs of conductive paths, wherein the crosstalk injection circuit includes at least first, second and third discrete crosstalk injection elements that are time-delayed with respect to each other and that all inject crosstalk having the same polarity between the first and second differential pairs of conductive paths.
1 more element
Dependencies are inferred from the claim text.