WO1998038773A3 - Circuit d'attaque de ligne a impedance de sortie adaptative - Google Patents

Circuit d'attaque de ligne a impedance de sortie adaptative Download PDF

Info

Publication number
WO1998038773A3
WO1998038773A3 PCT/IB1998/000128 IB9800128W WO9838773A3 WO 1998038773 A3 WO1998038773 A3 WO 1998038773A3 IB 9800128 W IB9800128 W IB 9800128W WO 9838773 A3 WO9838773 A3 WO 9838773A3
Authority
WO
WIPO (PCT)
Prior art keywords
line driver
transistor
impedance
current
output impedance
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.)
Ceased
Application number
PCT/IB1998/000128
Other languages
English (en)
Other versions
WO1998038773A2 (fr
Inventor
Bram Nauta
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.)
Koninklijke Philips NV
Philips Norden AB
Original Assignee
Koninklijke Philips Electronics NV
Philips Norden AB
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 Koninklijke Philips Electronics NV, Philips Norden AB filed Critical Koninklijke Philips Electronics NV
Priority to EP98900646A priority Critical patent/EP0917788B1/fr
Priority to PCT/IB1998/000128 priority patent/WO1998038773A2/fr
Priority to JP52922598A priority patent/JP3830534B2/ja
Priority to KR1019980708477A priority patent/KR100563014B1/ko
Priority to DE69834793T priority patent/DE69834793T2/de
Publication of WO1998038773A2 publication Critical patent/WO1998038773A2/fr
Publication of WO1998038773A3 publication Critical patent/WO1998038773A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0278—Arrangements for impedance matching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/028—Arrangements specific to the transmitter end

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Networks Using Active Elements (AREA)

Abstract

Un circuit d'attaque de ligne comprend un premier transistor (M1), un premier amplificateur (A1) et une résistance de référence (10), de façon à transformer une tension d'entrée (Vin) en un premier courant (i1) traversant le premier transistor (M1). Un second courant i2 = n*i1 traverse un second transistor (M2) qui forme un miroir de courant 1:n avec le premier transistor (M1). Le courant (i2) se dirige vers une charge (6), si nécessaire via une ligne de transmission (TL). L'impédance de la charge (6) est égale à l'impédance caractéristique (RL) de la ligne de transmission (TL). L'impédance vue par le circuit d'attaque de ligne est donc égale à RL. Un second amplificateur de transconductance (A2) s'oppose aux signaux réfléchis dans le signal de sortie (Vout) du fait du décalage entre l'impédance de sortie du miroir de courant (M1, M2) et l'impédance vue par le circuit d'attaque de ligne.
PCT/IB1998/000128 1997-02-25 1998-02-02 Circuit d'attaque de ligne a impedance de sortie adaptative Ceased WO1998038773A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP98900646A EP0917788B1 (fr) 1997-02-25 1998-02-02 Circuit d'attaque de ligne a impedance de sortie adaptative
PCT/IB1998/000128 WO1998038773A2 (fr) 1997-02-25 1998-02-02 Circuit d'attaque de ligne a impedance de sortie adaptative
JP52922598A JP3830534B2 (ja) 1997-02-25 1998-02-02 適応出力インピーダンスを有するラインドライバ
KR1019980708477A KR100563014B1 (ko) 1997-02-25 1998-02-02 적응출력임피던스를가지는라인구동기
DE69834793T DE69834793T2 (de) 1997-02-25 1998-02-02 Leitungstreiber mit adaptiver ausgangsimpedanz

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP97200526.8 1997-02-25
PCT/IB1998/000128 WO1998038773A2 (fr) 1997-02-25 1998-02-02 Circuit d'attaque de ligne a impedance de sortie adaptative

Publications (2)

Publication Number Publication Date
WO1998038773A2 WO1998038773A2 (fr) 1998-09-03
WO1998038773A3 true WO1998038773A3 (fr) 1998-11-26

Family

ID=11004665

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1998/000128 Ceased WO1998038773A2 (fr) 1997-02-25 1998-02-02 Circuit d'attaque de ligne a impedance de sortie adaptative

Country Status (1)

Country Link
WO (1) WO1998038773A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6665399B1 (en) * 1999-03-25 2003-12-16 Nortel Networks Limited High-efficiency line driver
US6275078B1 (en) * 2000-02-04 2001-08-14 Stmicroelectronics, Inc. Self-adjustable impendance line driver

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995002931A1 (fr) * 1993-07-14 1995-01-26 Philips Electronics N.V. Circuit d'attaque de ligne a impedance de sortie adaptative
US5585763A (en) * 1995-03-30 1996-12-17 Crystal Semiconductor Corporation Controlled impedance amplifier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995002931A1 (fr) * 1993-07-14 1995-01-26 Philips Electronics N.V. Circuit d'attaque de ligne a impedance de sortie adaptative
US5585763A (en) * 1995-03-30 1996-12-17 Crystal Semiconductor Corporation Controlled impedance amplifier

Also Published As

Publication number Publication date
WO1998038773A2 (fr) 1998-09-03

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