GB905396A - Improvements in or relating to two-way amplifiers for connecting two sections of a transmission line - Google Patents

Improvements in or relating to two-way amplifiers for connecting two sections of a transmission line

Info

Publication number
GB905396A
GB905396A GB191259A GB191259A GB905396A GB 905396 A GB905396 A GB 905396A GB 191259 A GB191259 A GB 191259A GB 191259 A GB191259 A GB 191259A GB 905396 A GB905396 A GB 905396A
Authority
GB
United Kingdom
Prior art keywords
amplifiers
amplifier
line
impedance
jan
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
GB191259A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB905396A publication Critical patent/GB905396A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/36—Repeater circuits
    • H04B3/38—Repeater circuits for signals in two different frequency ranges transmitted in opposite directions over the same transmission path

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)

Abstract

905,396. Two-way transmissions. TELEFONAKTIEBOLAGET L. M. ERICSSON. Jan. 19, 1959 [Jan. 22, 1958], No. 1912/59. Drawings to Specification. Class 40 (4). In a two-way amplifier comprising two oneway amplifiers connected to respective lines via hybrid transformers, the input and output impedances of the amplifiers are arranged so that substantially the whole of the energy coming in is dissipated in the line-balancing network. In these circumstances the impedance presented by the amplifier to the line is substantially that of the balancing network so that the line and amplifier impedances are perfectly matched and no reflections take place. To satisfy the required condition the amplifiers are required to have very high input impedance and very low output impedance or vice versa. Suitable amplifiers in the respective cases may be emitter follower transistor amplifiers or grounded base transistor amplifiers.
GB191259A 1958-01-22 1959-01-19 Improvements in or relating to two-way amplifiers for connecting two sections of a transmission line Expired GB905396A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE58858 1958-01-22

Publications (1)

Publication Number Publication Date
GB905396A true GB905396A (en) 1962-09-05

Family

ID=20256811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191259A Expired GB905396A (en) 1958-01-22 1959-01-19 Improvements in or relating to two-way amplifiers for connecting two sections of a transmission line

Country Status (3)

Country Link
DE (1) DE1129544B (en)
FR (1) FR1214087A (en)
GB (1) GB905396A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7208148A (en) * 1972-06-15 1973-12-18

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE944862C (en) * 1950-03-20 1956-06-28 Siemens Ag Circuit arrangement for a fork for converting a four-wire circuit into a two-wire circuit or vice versa, in which the fork has the same impedance at all four connections

Also Published As

Publication number Publication date
DE1129544B (en) 1962-05-17
FR1214087A (en) 1960-04-06

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