NO985487L - Fork Connector - Google Patents

Fork Connector

Info

Publication number
NO985487L
NO985487L NO985487A NO985487A NO985487L NO 985487 L NO985487 L NO 985487L NO 985487 A NO985487 A NO 985487A NO 985487 A NO985487 A NO 985487A NO 985487 L NO985487 L NO 985487L
Authority
NO
Norway
Prior art keywords
rqr
rqt
receiving unit
resistors
bridge
Prior art date
Application number
NO985487A
Other languages
Norwegian (no)
Other versions
NO985487D0 (en
Inventor
Egsegger Stefan R
Original Assignee
Siemens Schweiz Ag
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 Siemens Schweiz Ag filed Critical Siemens Schweiz Ag
Publication of NO985487D0 publication Critical patent/NO985487D0/en
Publication of NO985487L publication Critical patent/NO985487L/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1423—Two-way operation using the same type of signal, i.e. duplex for simultaneous baseband signals
    • 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
    • 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
    • H04B1/581—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 using a transformer
    • 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
    • H04B1/583—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 using a bridge network

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

Gaffelkobling som tjener til å forbinde en sendeenhet (TX) og en mottaksenhet (RX) til en totråds overføringsledning og som har en brokobling med fire brogrener hver med to motstander (Rlt, R2t; Rir, R2r; R3r, Rqr; R3t, Rqt) som er slik dimensjonert og slik forbundet med de to utgangene (txal, txa2) til sendeenheten (TX) og de to inngangene (rxel, rxe2) til mottaksenheten (RX), at andelene av sendesignalet som opptrer på inngangen til mottaksenheten (RX) gjensidig opphever hverandre, hvor overføringsledningen eventuelt ved innkobling av en transformator (TF) er forbundet med sendeenheten (TX) over de første motstandene (Rqt og Rqr) til tredje og fjerde brogren (R3r, Rqr; R3t, Rqt) og med mottaks- enheten (RX) over de andre motstandene (R3t og R3r) til tredje og fjerde brogrener (R3r, Rqr; R3t, Rqt). Motstandene (Rlt, R2t, R3r, Rqr henholdsvis Rir, R2r, R3t, Rqt) til fjerde brogren er ifølge oppfinnelsen slik valgt at en prinsipielt nødvendig impedans (Zb) for kompensasjon av impedansen (Zl) til overføringsledningen, antar en så høy verdi at den nødvendige feiltoleransen for gaffel- koblingen beholdes uten innbygging av denne impedansen (Zb). Fortrinnsvis forbindes gaffel- koblingen med inngangen til mottaksenheten (RX) via et filter (FR) som tjener til utjevning av dynamikkområdene dynl, dyn2 til signalene som overføres over kabler med forskjellige diametere.Fork coupling which serves to connect a transmitting unit (TX) and a receiving unit (RX) to a two-wire transmission line and having a bridge connection with four bridge branches each with two resistors (Rlt, R2t; Rir, R2r; R3r, Rqr; R3t, Rqt) which is so dimensioned and so connected to the two outputs (txal, txa2) of the transmitting unit (TX) and the two inputs (rxel, rxe2) of the receiving unit (RX) that the proportions of the transmitting signal appearing at the input of the receiving unit (RX) cancel each other, where the transmission line is optionally connected by a transformer (TF) to the transmitting unit (TX) over the first resistors (Rqt and Rqr) to the third and fourth bridge branches (R3r, Rqr; R3t, Rqt) and to the receiving unit ( RX) over the other resistors (R3t and R3r) to the third and fourth bridge branches (R3r, Rqr; R3t, Rqt). The resistances (Rlt, R2t, R3r, Rqr and Rir, R2r, R3t, Rqt, respectively) of the fourth bridge branch are according to the invention chosen such that a principle necessary impedance (Zb) for compensation of the impedance (Zl) to the transmission line assumes such a high value that the required fault tolerance for the fork coupling is maintained without incorporating this impedance (Zb). Preferably, the fork coupling is connected to the input of the receiving unit (RX) via a filter (FR) which serves to smooth the dynamics domains dynl, dyn2 to the signals transmitted over cables of different diameters.

NO985487A 1997-03-25 1998-11-24 Fork Connector NO985487L (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH71497 1997-03-25
CH75697 1997-04-02
PCT/CH1998/000077 WO1998043385A1 (en) 1997-03-25 1998-02-26 Hybrid circuit

Publications (2)

Publication Number Publication Date
NO985487D0 NO985487D0 (en) 1998-11-24
NO985487L true NO985487L (en) 1999-01-25

Family

ID=25685457

Family Applications (1)

Application Number Title Priority Date Filing Date
NO985487A NO985487L (en) 1997-03-25 1998-11-24 Fork Connector

Country Status (4)

Country Link
EP (1) EP0927471A1 (en)
AU (1) AU730313B2 (en)
NO (1) NO985487L (en)
WO (1) WO1998043385A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60206185T2 (en) * 2002-12-13 2006-01-12 Alcatel Frequency-dependent telecommunications hybrid circuit
US6931122B2 (en) * 2003-02-05 2005-08-16 Analog Devices, Inc. Single transformer hybrid system and method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6042959A (en) * 1983-08-19 1985-03-07 Fuji Facom Corp Differential type simultaneous bi-directional transmission circuit
FR2677196A1 (en) * 1991-05-31 1992-12-04 Sgs Thomson Microelectronics Passive two wire/four wire differential converter

Also Published As

Publication number Publication date
EP0927471A1 (en) 1999-07-07
NO985487D0 (en) 1998-11-24
WO1998043385A1 (en) 1998-10-01
AU730313B2 (en) 2001-03-01
AU5979898A (en) 1998-10-20

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application