# US 2010/0167589 A1 · Telecommunications jack with adjustable crosstalk compensation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0167589 A1 - Document ID: US20100167589A1 - Status: Published application - Kind: A1 - Application number: 12/625,224 - Filed: 2009-11-24 - Published: 2010-07-01 - Earliest claimed: 2008-11-25 - Assignees: ADC GmbH - Inventors: Bernard Harold Hammond, JR.; David Patrick Murray; Gordon John White; Ian Robert George - Web page: https://patentgrep.com/patent/US20100167589A1 ## CPC - H01R 13/6466: on substrates, e.g. printed circuit boards [PCB] - H05K 1/0228: {Compensation of cross-talk by a mutually correlated lay-out of printed circuit traces, e.g. for compensation of cross-talk in mounted connectors (balanced signal pairs H05K1/0245)} - H05K 1/162: {incorporating printed capacitors} - H05K 2201/10189: Non-printed connector - H05K 2203/171: Tuning, e.g. by trimming of printed components or high frequency circuits - H05K 2203/173: Adding connections between adjacent pads or conductors, e.g. for modifying or repairing - H05K 2203/175: Configurations of connections suitable for easy deletion, e.g. modifiable circuits or temporary conductors for electroplating; Processes for deleting connections - Y10T 29/49208: by assembling plural parts - Y10T 29/49222: forming array of contacts or terminals - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Methods and systems for compensating for crosstalk in a telecommunications jack are disclosed. One method includes manufacturing a circuit board having a zone of crosstalk compensation between a first wire pair and a second wire pair, the zone of crosstalk compensation including a capacitive coupling connected between the first wire pair and the second wire pair and a second capacitive coupling selectively connectable in parallel with the capacitive coupling. The method further includes determining a crosstalk value generated by the jack including the manufactured circuit board. The method also includes, upon determining that the crosstalk value is outside of a crosstalk pass band, adjusting the zone of crosstalk compensation by altering an electrical connection between the second capacitive coupling and the capacitive coupling after the circuit board has been manufactured. ## Claims ### Claim 1 A method for compensating for crosstalk generated by one or more of a plurality of wire pairs in a telecommunications jack, the method comprising: manufacturing a circuit board having a zone of crosstalk compensation between a first wire pair and a second wire pair, the zone of crosstalk compensation including a capacitive coupling connected between the first wire pair and the second wire pair and a second capacitive coupling selectively connectable in parallel with the capacitive coupling; determining a crosstalk value generated by the jack including the manufactured circuit board; upon determining that the crosstalk value is outside of a crosstalk pass band, adjusting the zone of crosstalk compensation by altering an electrical connection between the second capacitive coupling and the capacitive coupling after the circuit board has been manufactured. ### Claim 2 (depends on 1) The method of claim 1, wherein altering the electrical connection includes forming an electrical connection between a via electrically connected to the capacitive coupling and a via electrically connected to the second capacitive coupling. ### Claim 3 (depends on 1) The method of claim 1, wherein altering the electrical connection includes disconnecting the electrical connection by electrically disconnecting a via electrically connected to the capacitive coupling from a via electrically connected to the second capacitive coupling. ### Claim 4 (depends on 1) The method of claim 1, wherein determining the crosstalk value includes testing the jack to determine whether the crosstalk generated by the jack falls within the crosstalk pass band. ### Claim 5 (depends on 3) The method of claim 3, wherein the crosstalk pass band is about 1 dB. ### Claim 6 (depends on 1) The method of claim 1, further comprising, after adjusting the zone of crosstalk compensation, predetermining a crosstalk value generated by the jack. ### Claim 7 A crosstalk compensation arrangement for a telecommunications jack comprising: a circuit board; a plurality of contact springs mounted on the circuit board; a plurality of wire termination contacts mounted on the circuit board; a plurality of tracks on the circuit board that respectively electrically connect the contact springs to the wire termination contacts; and a crosstalk compensation arrangement including a zone of crosstalk compensation between a first wire pair and a second wire pair, the zone of crosstalk compensation including a capacitive coupling connected between the first wire pair and the second wire pair and a second capacitive coupling selectively connectable in parallel with the capacitive coupling by altering a connection between a via electrically connected to the capacitive coupling and a via electrically connected to the second capacitive coupling. ### Claim 8 (depends on 7) The crosstalk compensation arrangement of claim 7, wherein the crosstalk compensation arrangement further includes a third capacitive coupling connected between the first wire pair and the second wire pair and a fourth capacitive coupling selectively connectable in parallel with the third capacitive coupling by altering a connection between a via electrically connected to the third capacitive coupling and a via electrically connected to the fourth capacitive coupling. ### Claim 9 (depends on 7) The crosstalk compensation arrangement of claim 7, wherein the contact springs include first, second, third, fourth, fifth, sixth, seventh and eighth consecutively arranged contact springs. ### Claim 10 (depends on 9) The crosstalk compensation arrangement of claim 9, wherein the wire termination contacts include first, second, third, fourth, fifth, sixth, seventh and eighth wire termination contacts for terminating wires to the jack. ### Claim 11 (depends on 10) The crosstalk compensation arrangement of claim 10, wherein the plurality of tracks includes first, second, third, fourth, fifth, sixth, seventh and eighth tracks that respectively electrically connect the first, second, third, fourth, fifth, sixth, seventh and eighth contact springs to the first, second, third, fourth, fifth, sixth, seventh and eighth wire termination contacts. ### Claim 12 (depends on 11) The crosstalk compensation arrangement of claim 11, wherein the capacitive coupling and the second capacitive coupling are connected between the third and fourth tracks. ### Claim 13 (depends on 12) The crosstalk compensation arrangement of claim 12, wherein the capacitive coupling and the second capacitive coupling are connected between the fifth and sixth tracks. ### Claim 14 (depends on 7) The crosstalk compensation arrangement of claim 7, wherein the capacitive coupling and the second capacitive coupling comprise a plurality of interdigitated fingers. ### Claim 15 (depends on 7) The crosstalk compensation arrangement of claim 7, further comprising a fifth capacitive coupling selectively connectable in parallel with the capacitive coupling and the second capacitive coupling. ### Claim 16 (depends on 8) The crosstalk compensation arrangement of claim 8, further comprising a sixth capacitive coupling selectively connectable in parallel with the third capacitive coupling and the fourth capacitive coupling. ### Claim 17 (depends on 7) The crosstalk compensation arrangement of claim 7, wherein an acceptable level of crosstalk generated by a telecommunications jack including the circuit board is about 25 dB to about 26 dB. ### Claim 18 (depends on 17) The crosstalk compensation arrangement of claim 17, wherein the second capacitive coupling provides alteration of the crosstalk by about 0.8 dB. ### Claim 19 A telecommunications jack for use in a twisted pair system, the jack comprising: a housing defining a port for receiving a plug; a plurality of contact springs adapted to make electrical contact with the plug when the plug is inserted into the port of the housing; a plurality of wire termination contacts for terminating wires to the jack; a circuit board including conductive tracks that electrically connect the contact springs to the wire termination contacts; and a crosstalk compensation arrangement including a zone of crosstalk compensation between a first wire pair and a second wire pair, the zone of crosstalk compensation including a capacitive coupling connected between the first wire pair and the second wire pair and a second capacitive coupling selectively connectable in parallel with the capacitive coupling by altering a connection between a via electrically connected to the capacitive coupling and a via electrically connected to the second capacitive coupling. ### Claim 20 (depends on 19) The telecommunications jack of claim 19, wherein the zone of crosstalk compensation corresponds to a second zone of crosstalk compensation between the first wire pair and the second wire pair.