GB846705A - Improvements in or relating to transmission lines - Google Patents

Improvements in or relating to transmission lines

Info

Publication number
GB846705A
GB846705A GB3271956A GB3271956A GB846705A GB 846705 A GB846705 A GB 846705A GB 3271956 A GB3271956 A GB 3271956A GB 3271956 A GB3271956 A GB 3271956A GB 846705 A GB846705 A GB 846705A
Authority
GB
United Kingdom
Prior art keywords
terminals
transformer
impedance
quadripole
pairs
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
GB3271956A
Inventor
Arthur Walter
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.)
PINTSCH ELECTRO GES MIT BESCHR
Original Assignee
PINTSCH ELECTRO GES MIT BESCHR
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 DEP10510A priority Critical patent/DE970615C/en
Priority to FR1166466D priority patent/FR1166466A/en
Application filed by PINTSCH ELECTRO GES MIT BESCHR filed Critical PINTSCH ELECTRO GES MIT BESCHR
Priority to GB3271956A priority patent/GB846705A/en
Priority to US618997A priority patent/US2909733A/en
Publication of GB846705A publication Critical patent/GB846705A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/03—Hybrid circuits

Landscapes

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

Abstract

846,705. Two-way transmissions. PINTSCHELECTRO G.m.b.H. Oct. 26, 1956, No. 32719/56. Class 40 (4). [Also in Group XL (b)] A hybrid circuit comprising three pairs of terminals and incorporating a differential transformer 1 also includes a resistive quadripole designed so that the impedance at all three pairs of terminals is identical so that the circuit may be used to connect a two-wire line to a four-wire line. The impedance z at a first pair of terminals i, k connected to the secondary of transformer 1, is half that 2z at the transformer terminals e, f. Said transformer terminals are connected to a matching resistive quadripole wl, w2 so selected that the impedance at the twowire terminals g, h, is also z. As the impedance at the terminals c, d, taken from the centre tap of the transformer, is z, the required conditions are satisfied. The quadripole in addition provides attenuation at terminals g, h to limit the transmitted signals. The network N balances the impedance 2z. In a modification, Fig. 5 (not shown) the transformer and quadripole are symmetrically designed with respect to earth and a resistance divider w3, w4, may be employed to produce a balanced network.
GB3271956A 1953-09-24 1956-10-26 Improvements in or relating to transmission lines Expired GB846705A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DEP10510A DE970615C (en) 1953-09-24 1953-09-24 Hybrid circuit with the same impedance on all three pairs of terminals
FR1166466D FR1166466A (en) 1956-10-26 1956-10-23 Fork connection
GB3271956A GB846705A (en) 1956-10-26 1956-10-26 Improvements in or relating to transmission lines
US618997A US2909733A (en) 1956-10-26 1956-10-29 Hybrid circuit arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3271956A GB846705A (en) 1956-10-26 1956-10-26 Improvements in or relating to transmission lines

Publications (1)

Publication Number Publication Date
GB846705A true GB846705A (en) 1960-08-31

Family

ID=10343002

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3271956A Expired GB846705A (en) 1953-09-24 1956-10-26 Improvements in or relating to transmission lines

Country Status (2)

Country Link
FR (1) FR1166466A (en)
GB (1) GB846705A (en)

Also Published As

Publication number Publication date
FR1166466A (en) 1958-11-12

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