GB158536A - Improvements in means for minimising coupling between receiver and transmitter amplifiers in a high-frequency signalling system - Google Patents

Improvements in means for minimising coupling between receiver and transmitter amplifiers in a high-frequency signalling system

Info

Publication number
GB158536A
GB158536A GB3300420A GB3300420A GB158536A GB 158536 A GB158536 A GB 158536A GB 3300420 A GB3300420 A GB 3300420A GB 3300420 A GB3300420 A GB 3300420A GB 158536 A GB158536 A GB 158536A
Authority
GB
United Kingdom
Prior art keywords
line
receiver
exchange
transmitter
signalling system
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
GB3300420A
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.)
KARL HOPFNER
Original Assignee
KARL HOPFNER
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 KARL HOPFNER filed Critical KARL HOPFNER
Publication of GB158536A publication Critical patent/GB158536A/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
    • 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)
  • Mobile Radio Communication Systems (AREA)

Abstract

158,536. Fiedler, R., and Hopfner, K. Feb. 5, 1920, [Convention date]. Combined transmitting and receiving arrangements; wired wireless systems.-In a system of telephony in which the subscriber is connected through one or more exchanges to a wireless set, or to apparatus for telephoning the high-frequency oscillations over line wires, and both receiver and transmitter have a common circuit to the exchange, but are so connected, as diagonals of a wheatstone bridge, or by a differential arrangement as not to interfere with each other, an artificial line is connected in the line to the exchange, so as to make it possible to balance the line independently of its length with one adjustment. In an example, Fig. 4, the receiver e is coupled to the equal coils h, and the transmitter f forms the other diagonal. The coil k balances the resistance of the line i leading to the exchange and the artificial line e. The arrangement is also suitable for use in telephotography.
GB3300420A 1920-02-05 1920-11-23 Improvements in means for minimising coupling between receiver and transmitter amplifiers in a high-frequency signalling system Expired GB158536A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE158536X 1920-02-05

Publications (1)

Publication Number Publication Date
GB158536A true GB158536A (en) 1922-03-23

Family

ID=5679665

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3300420A Expired GB158536A (en) 1920-02-05 1920-11-23 Improvements in means for minimising coupling between receiver and transmitter amplifiers in a high-frequency signalling system

Country Status (1)

Country Link
GB (1) GB158536A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629024A (en) * 1950-12-29 1953-02-17 Bell Telephone Labor Inc Unbalanced-to-ground two-to-fourwire connection
US2725532A (en) * 1952-12-31 1955-11-29 Itt Balanced junction device for a two-way telephone repeater
CN112910885A (en) * 2021-01-29 2021-06-04 湖北民族大学 Secure communication system and method based on Wheatstone bridge balance method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629024A (en) * 1950-12-29 1953-02-17 Bell Telephone Labor Inc Unbalanced-to-ground two-to-fourwire connection
US2725532A (en) * 1952-12-31 1955-11-29 Itt Balanced junction device for a two-way telephone repeater
CN112910885A (en) * 2021-01-29 2021-06-04 湖北民族大学 Secure communication system and method based on Wheatstone bridge balance method

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