GB468735A - Apparatus and method for remedying crosstalk - Google Patents

Apparatus and method for remedying crosstalk

Info

Publication number
GB468735A
GB468735A GB29177/36A GB2917736A GB468735A GB 468735 A GB468735 A GB 468735A GB 29177/36 A GB29177/36 A GB 29177/36A GB 2917736 A GB2917736 A GB 2917736A GB 468735 A GB468735 A GB 468735A
Authority
GB
United Kingdom
Prior art keywords
circuit
circuits
groups
panel
panels
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB29177/36A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB468735A publication Critical patent/GB468735A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/32—Reducing cross-talk, e.g. by compensating
    • H04B3/34—Reducing cross-talk, e.g. by compensating by systematic interconnection of lengths of cable during laying; by addition of balancing components to cable during laying

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

468,735. Preventing inductive disturbance. STANDARD TELEPHONES & CABLES, Ltd. Oct. 27, 1936, No. 29177. Convention date, Nov. 9, 1935. [Class 40 (iv)] The mutual inductance and capacity between each pair of circuits of a multi-core cable are adjusted within a repeater section at a panel or panels at which each circuit intersects every other circuit. The adjusting unit comprises coils 48, 49 in the sides of one circuit and an intermediate movable coil 50 in one side of the other circuit, and a condenser having fixed plates 52, 53 connected to the sides of one circuit and a movable plate 54 connected to one side of the other circuit. Each fixed coil 48, 49 is shunted by a resistance and inductance in series. If there are a small number of circuits, say six, they are led across a single square panel in the manner shown in Fig. 2, so that each of the circuits 1-6 intersects every other circuit. If there are a large number of circuits, they are arranged in groups, and adjustment within each group is made at a square panel, while adjustment between each two groups is made at a rectangular panel shown in Fig. 3; where each of the circuits 1-6 intersects each of the circuits 7-12. The portion of a panel at an intersecting point is shown in Fig. 4, 43, 44 being the incoming and outgoing terminals of one circuit and 45, 46 those of the other circuit. Figs. 8-12 show the spacing of the square and rectangular panels for one up to five groups of circuits, the arrangement being such that the addition of a group or groups to the cable merely requires the interpolation of further panels without disturbing the existing panels. When the scheme is extended beyond six groups, shifting of one or two existing panels may be necessary. It will be noticed that in all cases the panels form a series of groups in which each circuit appears on a panel only once in each group, and that the number of intersections along any pair of circuits preceding or succeeding their point of intersection is the same or differs by unity, thus equalizing the phase shift.
GB29177/36A 1935-11-09 1936-10-27 Apparatus and method for remedying crosstalk Expired GB468735A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US48947A US2080217A (en) 1935-11-09 1935-11-09 Apparatus and method for remedying crosstalk

Publications (1)

Publication Number Publication Date
GB468735A true GB468735A (en) 1937-07-12

Family

ID=21957300

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29177/36A Expired GB468735A (en) 1935-11-09 1936-10-27 Apparatus and method for remedying crosstalk

Country Status (2)

Country Link
US (1) US2080217A (en)
GB (1) GB468735A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741723C (en) * 1939-09-30 1943-11-16 Siemens Ag Method for balancing the magnetic coupling in communication lines

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5341419A (en) * 1992-08-21 1994-08-23 The Whitaker Corporation Capacitive unbalancing for reduction of differential mode cross-talk
US5431584A (en) * 1994-01-21 1995-07-11 The Whitaker Corporation Electrical connector with reduced crosstalk
US5399106A (en) * 1994-01-21 1995-03-21 The Whitaker Corporation High performance electrical connector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741723C (en) * 1939-09-30 1943-11-16 Siemens Ag Method for balancing the magnetic coupling in communication lines

Also Published As

Publication number Publication date
US2080217A (en) 1937-05-11

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