CA2227313A1 - Commande de chemin d'erreur destinee a un amplificateur a correction aval - Google Patents

Commande de chemin d'erreur destinee a un amplificateur a correction aval Download PDF

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Publication number
CA2227313A1
CA2227313A1 CA002227313A CA2227313A CA2227313A1 CA 2227313 A1 CA2227313 A1 CA 2227313A1 CA 002227313 A CA002227313 A CA 002227313A CA 2227313 A CA2227313 A CA 2227313A CA 2227313 A1 CA2227313 A1 CA 2227313A1
Authority
CA
Canada
Prior art keywords
signal
feed
forward amplifier
error
carrier
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.)
Abandoned
Application number
CA002227313A
Other languages
English (en)
Inventor
Mark Ian Van Horn
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.)
Motorola Solutions Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2227313A1 publication Critical patent/CA2227313A1/fr
Abandoned legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward
    • H03F1/3229—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3212—Using a control circuit to adjust amplitude and phase of a signal in a signal path

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

Cet amplificateur à correction aval (200) base la commande d'un chemin d'erreur (123) sur un signal de sortie, après avoir annulé la porteuse afin d'enlever le signal de celle-ci. Cet amplificateur (200) met également en oeuvre des coupleurs (203, 212), un bloc de commande (206) de gain/phase d'annulation de la porteuse, ainsi qu'un bloc de temporisation (209) d'annulation de la porteuse, afin d'annuler le signal de la porteuse. En basant la commande du chemin d'erreur (123) sur un signal dépourvu du signal de la porteuse, cette commande ne subit par les effets du champ dynamique élevé présenté par le signal de la porteuse, améliorant ainsi la commande globale de l'amplificateur (200) à correction aval.
CA002227313A 1996-05-17 1997-02-13 Commande de chemin d'erreur destinee a un amplificateur a correction aval Abandoned CA2227313A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64935796A 1996-05-17 1996-05-17
US08/649,357 1996-05-17

Publications (1)

Publication Number Publication Date
CA2227313A1 true CA2227313A1 (fr) 1997-11-27

Family

ID=24604442

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002227313A Abandoned CA2227313A1 (fr) 1996-05-17 1997-02-13 Commande de chemin d'erreur destinee a un amplificateur a correction aval

Country Status (6)

Country Link
EP (1) EP0839405A1 (fr)
JP (1) JPH11509716A (fr)
KR (1) KR19990022835A (fr)
AU (1) AU1959597A (fr)
CA (1) CA2227313A1 (fr)
WO (1) WO1997044894A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3949322B2 (ja) 1999-09-01 2007-07-25 三菱電機株式会社 フィードフォワード増幅器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4389618A (en) * 1981-04-15 1983-06-21 The United States Of America As Represented By The Secretary Of The Navy Adaptive feed-forward system
GB2167256A (en) * 1984-11-17 1986-05-21 Racal Communications Equip Feedforward amplifiers
US5485120A (en) * 1994-07-28 1996-01-16 Aval Communications Inc. Feed-forward power amplifier system with adaptive control and control method
US5570063A (en) * 1995-05-18 1996-10-29 Spectrian, Inc. RF power amplifier with signal predistortion for improved linearity

Also Published As

Publication number Publication date
EP0839405A1 (fr) 1998-05-06
JPH11509716A (ja) 1999-08-24
KR19990022835A (ko) 1999-03-25
WO1997044894A1 (fr) 1997-11-27
AU1959597A (en) 1997-12-09

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