GB154027A - Improvements in telephonic and like transmission systems - Google Patents

Improvements in telephonic and like transmission systems

Info

Publication number
GB154027A
GB154027A GB2357619A GB2357619A GB154027A GB 154027 A GB154027 A GB 154027A GB 2357619 A GB2357619 A GB 2357619A GB 2357619 A GB2357619 A GB 2357619A GB 154027 A GB154027 A GB 154027A
Authority
GB
United Kingdom
Prior art keywords
capacity
section
inductance
resistance
parallel
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
GB2357619A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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
Priority to FR19262A priority Critical patent/FR19262E/en
Priority to DENDAT301946D priority patent/DE301946C/de
Priority to FR471628A priority patent/FR471628A/en
Priority to GB191405247D priority patent/GB191405247A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Priority to GB2357619A priority patent/GB154027A/en
Priority to FR21789A priority patent/FR21789E/en
Publication of GB154027A publication Critical patent/GB154027A/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
    • H04B3/14—Control of transmission; Equalising characterised by the equalising network used
    • H04B3/143—Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa

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

154,027. Western Electric Co., (Western Electric Co.). Sept. 25, 1919. Drawings to Specification. Telephone systems.-When a transmission line is divided into two sections by a transformer, as in a two-way repeater system, impedances are inserted such that the resultant impedance of one section is substantially equal to that of the other section multiplied by the transformer ratio. The impedance inserted in each section may comprise a capacity, or a capacity in parallel with a resistance or inductance, or a capacity, resistance, and inductance all three in parallel. Mathematical investigations are given in the Specification to show how the elements of the two circuits should be proportioned in order that the above-stated condition may be approximately secured over a practical range of frequencies.
GB2357619A 1913-02-28 1919-09-25 Improvements in telephonic and like transmission systems Expired GB154027A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR19262A FR19262E (en) 1913-02-28 Electric power transmission system applied to telephone circuits
DENDAT301946D DE301946C (en) 1913-02-28
FR471628A FR471628A (en) 1913-02-28 1914-02-16 Electric power transmission system applied to telephone circuits
GB191405247D GB191405247A (en) 1913-02-28 1914-02-28 Improvements in Systems for the Transmission of Electrical Energy.
GB2357619A GB154027A (en) 1919-09-25 1919-09-25 Improvements in telephonic and like transmission systems
FR21789A FR21789E (en) 1913-02-28 1919-10-27 Electric power transmission system applied to telephone circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2357619A GB154027A (en) 1919-09-25 1919-09-25 Improvements in telephonic and like transmission systems

Publications (1)

Publication Number Publication Date
GB154027A true GB154027A (en) 1920-11-25

Family

ID=10197900

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2357619A Expired GB154027A (en) 1913-02-28 1919-09-25 Improvements in telephonic and like transmission systems

Country Status (1)

Country Link
GB (1) GB154027A (en)

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