GB1492045A - Adaptive hybrid circuit - Google Patents

Adaptive hybrid circuit

Info

Publication number
GB1492045A
GB1492045A GB46553/74A GB4655374A GB1492045A GB 1492045 A GB1492045 A GB 1492045A GB 46553/74 A GB46553/74 A GB 46553/74A GB 4655374 A GB4655374 A GB 4655374A GB 1492045 A GB1492045 A GB 1492045A
Authority
GB
United Kingdom
Prior art keywords
signal
amplifier
wire circuit
circuit
network
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
GB46553/74A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1492045A publication Critical patent/GB1492045A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—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)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Networks Using Active Elements (AREA)

Abstract

1492045 Adaptive hybrid GENERAL ELECTRIC CO 28 Oct 1974 [29 Oct 1973] 46553/74 Heading H4R In an active hybrid circuit which is of the type described in Specification 1,491,885 in which an amplifier 20 feeding the transmit channel of a four wire circuit is fed both with the signal appearing across a fixed impedance means 17 connected to the two wire circuit and with a cancellation signal derived from the receive channel of the four wire circuit and in phase opposition to that part of the signal appearing across the fixed impedance means which derives from the receive channel of the four wire line, the cancellation signal is derived via a delay line impedance synthesizer network 25 which is controlled by correlation of the signal in the receive channel with the signal in the transmit channel of the four wire circuit. In an alternative embodiment, Fig. 2 (not shown) the impedance synthesizer network is connected in the connection between the output of amplifier 14 and the resistor 18a and a direct connection provided between amplifier 19 output and resistor 26. The impedance synthesizer is preferably a transversal equalizer network.
GB46553/74A 1973-10-29 1974-10-28 Adaptive hybrid circuit Expired GB1492045A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US41047473A 1973-10-29 1973-10-29

Publications (1)

Publication Number Publication Date
GB1492045A true GB1492045A (en) 1977-11-16

Family

ID=23624890

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46553/74A Expired GB1492045A (en) 1973-10-29 1974-10-28 Adaptive hybrid circuit

Country Status (9)

Country Link
JP (1) JPS5080743A (en)
BR (1) BR7409057D0 (en)
CA (1) CA1006280A (en)
DE (1) DE2451016A1 (en)
FR (1) FR2249508A1 (en)
GB (1) GB1492045A (en)
IT (1) IT1025247B (en)
NL (1) NL7414049A (en)
SE (1) SE7413558L (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2130851A (en) * 1982-11-24 1984-06-06 Grundy & Partners Ltd Hybrid junction circuits
GB2159022A (en) * 1984-05-09 1985-11-20 Northern Telecom Ltd An adaptive hybrid
US4715064A (en) * 1984-06-22 1987-12-22 Ncr Corporation Adaptive hybrid circuit
CN109995343A (en) * 2019-03-27 2019-07-09 无锡海斯凯尔医学技术有限公司 Impedance-matching device and ultrasonic image-forming system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2938948A1 (en) * 1979-09-26 1981-04-16 Dasy Inter S.A., Genf DUPLEX AMPLIFIER WITH AMPLITUDE CONTROLLED DUPLEX LOCK

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2130851A (en) * 1982-11-24 1984-06-06 Grundy & Partners Ltd Hybrid junction circuits
GB2159022A (en) * 1984-05-09 1985-11-20 Northern Telecom Ltd An adaptive hybrid
US4715064A (en) * 1984-06-22 1987-12-22 Ncr Corporation Adaptive hybrid circuit
CN109995343A (en) * 2019-03-27 2019-07-09 无锡海斯凯尔医学技术有限公司 Impedance-matching device and ultrasonic image-forming system
CN109995343B (en) * 2019-03-27 2023-06-30 无锡海斯凯尔医学技术有限公司 Impedance matching device and ultrasonic imaging system

Also Published As

Publication number Publication date
BR7409057D0 (en) 1975-08-26
FR2249508A1 (en) 1975-05-23
NL7414049A (en) 1975-05-02
CA1006280A (en) 1977-03-01
JPS5080743A (en) 1975-07-01
IT1025247B (en) 1978-08-10
DE2451016A1 (en) 1975-04-30
SE7413558L (en) 1975-04-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee