GB983935A - Improvements in or relating to submarine cable repeaters - Google Patents

Improvements in or relating to submarine cable repeaters

Info

Publication number
GB983935A
GB983935A GB3916661A GB3916661A GB983935A GB 983935 A GB983935 A GB 983935A GB 3916661 A GB3916661 A GB 3916661A GB 3916661 A GB3916661 A GB 3916661A GB 983935 A GB983935 A GB 983935A
Authority
GB
United Kingdom
Prior art keywords
network
repeater
attenuation
temperature
frequency
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
GB3916661A
Inventor
Thomas Oswald
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.)
Submarine Cables Ltd
Original Assignee
Submarine Cables Ltd
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 Submarine Cables Ltd filed Critical Submarine Cables Ltd
Priority to GB3916661A priority Critical patent/GB983935A/en
Priority to DE1962S0082261 priority patent/DE1206485B/en
Priority to FR914110A priority patent/FR1337718A/en
Publication of GB983935A publication Critical patent/GB983935A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/36—Repeater circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

983,935. Automatic volume control. SUBMARINE CABLES Ltd. Oct. 25, 1962 [Nov. 1, 1961], No. 39166/61. Drawings to Specification. Heading H4R. In a submarine repeater, the feedback path of the amplifier consists of a network which simulates the attenuation of a section of the cable and its variation with temperature and frequency. A length of cable has its attenuation proportional to the square root of the frequency and its temperature coefficient of attenuation half of the temperature coefficient of resistance of the metal of which it is made. A ladder network of series resistors and shunt capacitors also has these characteristics and if this network is included in the feedback path of a repeater amplifier it will compensate for the changes in attenuation of the cable due to variations in frequency and sea temperature. The construction of a repeater is described in which the valves are surrounded by heat conducting members connected to a heat sink held in contact with the repeater housing, while the feedback network is enclosed in a copper box connected to a second heat sink also held in contact with the repeater housing so that the network is kept at sea temperature. The resistors of the network are wire-wound components preferably made of platinum.
GB3916661A 1961-11-01 1961-11-01 Improvements in or relating to submarine cable repeaters Expired GB983935A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3916661A GB983935A (en) 1961-11-01 1961-11-01 Improvements in or relating to submarine cable repeaters
DE1962S0082261 DE1206485B (en) 1961-11-01 1962-10-31 Amplifier for submarine cables
FR914110A FR1337718A (en) 1961-11-01 1962-10-31 Repeaters or amplifiers usable in particular in submarine cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3916661A GB983935A (en) 1961-11-01 1961-11-01 Improvements in or relating to submarine cable repeaters

Publications (1)

Publication Number Publication Date
GB983935A true GB983935A (en) 1965-02-24

Family

ID=10408037

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3916661A Expired GB983935A (en) 1961-11-01 1961-11-01 Improvements in or relating to submarine cable repeaters

Country Status (3)

Country Link
DE (1) DE1206485B (en)
FR (1) FR1337718A (en)
GB (1) GB983935A (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2116600A (en) * 1935-04-25 1938-05-10 Bell Telephone Labor Inc Electrical transmission control
US2098968A (en) * 1935-06-14 1937-11-16 Bell Telephone Labor Inc Transmission regulation
US2151821A (en) * 1937-05-15 1939-03-28 Bell Telephone Labor Inc Transmission regulation
US2272735A (en) * 1940-05-11 1942-02-10 Bell Telephone Labor Inc Transmission system
GB853771A (en) * 1957-09-17 1960-11-09 British Telecomm Res Ltd Improvements in or relating to automatic gain regulators for carrier current telecommunication systems

Also Published As

Publication number Publication date
FR1337718A (en) 1963-09-13
DE1206485B (en) 1965-12-09

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