HK5396A - A high efficiency UHF linear power amplifier - Google Patents

A high efficiency UHF linear power amplifier Download PDF

Info

Publication number
HK5396A
HK5396A HK5396A HK5396A HK5396A HK 5396 A HK5396 A HK 5396A HK 5396 A HK5396 A HK 5396A HK 5396 A HK5396 A HK 5396A HK 5396 A HK5396 A HK 5396A
Authority
HK
Hong Kong
Prior art keywords
signal
envelope
output
circuit
radio frequency
Prior art date
Application number
HK5396A
Other languages
German (de)
English (en)
Inventor
Edward Fisher Reed
Joseph Koch Kichael
Original Assignee
At&T Corp.
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 At&T Corp. filed Critical At&T Corp.
Publication of HK5396A publication Critical patent/HK5396A/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • 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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • H03F1/0216—Continuous control
    • H03F1/0222—Continuous control by using a signal derived from the input signal
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/15—Indexing scheme relating to amplifiers the supply or bias voltage or current at the drain side of a FET being continuously controlled by a controlling signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/192—A hybrid coupler being used at the input of an amplifier circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/204—A hybrid coupler being used at the output of an amplifier circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/222—A circuit being added at the input of an amplifier to adapt the input impedance of the amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/228—A measuring circuit being coupled to the input of an amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/267—A capacitor based passive circuit, e.g. filter, being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/351—Pulse width modulation being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/387—A circuit being added at the output of an amplifier to adapt the output impedance of the amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/393—A measuring circuit being coupled to the output of an amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/75—Indexing scheme relating to amplifiers the amplifier stage being a common source configuration MOSFET
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/99—A diode as rectifier being used as a detecting circuit in an amplifying circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)

Claims (11)

  1. Circuit pour amplifier un signal radioélectrique ayant une enveloppe variable, comprenant un dispositif d'amplification (110) des première, deuxième électrodes et une électrode de commande, une source de tension d'alimentation (VCC), un moyen (115) pour coupler la première électrode du dispositif d'amplification à une sortie, un moyen (120) pour former un signal de variation d'enveloppe à partir du signal radioélectrique, un moyen de modulation (140,145) comprenant une borne d'entrée et une paire de bornes de sortie couplées entre la source de tension d'alimentation et la première électrode du dispositif d'amplification pour moduler le signal sur la première électrode du dispositif d'amplification, un moyen (125) sensible au signal radioélectrique couplé à la sortie pour former un signal correspondant aux variations d'enveloppe du signal radioélectrique à la sortie, un moyen (130) sensible au signal de variation d'enveloppe et au signal correspondant aux variations d'enveloppe du signal radioélectrique à la sortie pour produire un signal représentatif de la différence entre eux, et un moyen (135) pour appliquer le signal de différence à la borne d'entrée du moyen de modulation pour réduire la distorsion des variations d'enveloppe à la sortie, et CARACTERISE PAR un dispositif de chargement (180) couplé à la sortie, et un moyen (105) pour former un signal radioélectrique d'amplitude constante et pour coupler le signal radioélectrique d'amplitude constante à l'électrode de commande du dispositif d'amplification.
  2. Circuit selon la revendication 1, dans lequel le dispositif d'amplification (110) est un dispositif d'amplification non linéaire ayant des première, seconde électrodes et une électrode de commande.
  3. Circuit selon la revendication 2, dans lequel le dispositif d'amplification non linéaire (110) est un dispositif amplificateur fonctionnant en classe C ayant une base, un émetteur et un collecteur.
  4. Circuit selon la revendication 3, dans lequel le moyen de modulation (140,145) comprend un modulateur de largeur d'impulsion (340).
  5. Circuit selon l'une quelconque des revendications précédentes, dans lequel le signal radioélectrique a une porteuse variant en angle, et le moyen pour former un signal radioélectrique d'amplitude constante sert à coupler la porteuse variant en angle à l'électrode de commande du dispositif d'amplification (310).
  6. Circuit selon la revendication 5, dans lequel la porteuse variant en angle est une porteuse variant en fréquence.
  7. Circuit selon la revendication 6, dans lequel la porteuse variant en fréquence comprend une pluralité de signaux variant en fréquence.
  8. Circuit selon la revendication 5, dans lequel les variations d'angle de porteuse sont des variations de phase.
  9. Circuit selon la revendication 8, dans lequel les variations de phase comprennent une modulation par déplacement de phase différentiel M-aire ayant des déphasages prédéfinis et les variations d'enveloppe sont des variations d'enveloppe entre les déplacements de phase prédéfinis de la modulation MDPDM.
  10. Circuit selon la revendication 1, dans lequel le moyen de modulation (140,145) comprend un modulateur de largeur d'impulsion (140) et un moyen de filtre (145) couplé entre le modulateur de largeur d'impulsion et la première électrode pour supprimer les parties haute fréquence de la sortie du modulateur de largeur d'impulsion.
  11. Circuit selon l'une quelconque des revendications précédentes, dans lequel le moyen (120) pour former le signal de variation d'enveloppe comprend une première diode (570) et un moyen (574,576) pour polariser la première diode, le moyen (125) pour former le signal correspondant aux variations d'enveloppe du signal radioélectrique à la sortie comprend une seconde diode (560) et un moyen (564,567) pour polariser la seconde diode, et les moyens (564,567,574,576) pour polariser les première et seconde diodes (560,570) sont réglés pour maintenir les première et seconde diodes (560,570) à des caractéristiques de fonctionnement substantiellement semblables.
HK5396A 1989-02-28 1996-01-11 A high efficiency UHF linear power amplifier HK5396A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/316,891 US5105164A (en) 1989-02-28 1989-02-28 High efficiency uhf linear power amplifier

Publications (1)

Publication Number Publication Date
HK5396A true HK5396A (en) 1996-01-19

Family

ID=23231154

Family Applications (1)

Application Number Title Priority Date Filing Date
HK5396A HK5396A (en) 1989-02-28 1996-01-11 A high efficiency UHF linear power amplifier

Country Status (9)

Country Link
US (1) US5105164A (fr)
EP (1) EP0385641B1 (fr)
JP (1) JPH07101821B2 (fr)
KR (1) KR0135750B1 (fr)
CA (1) CA2006683C (fr)
DE (1) DE69015663T2 (fr)
FI (1) FI97575C (fr)
HK (1) HK5396A (fr)
SG (1) SG30995G (fr)

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Also Published As

Publication number Publication date
KR0135750B1 (ko) 1998-05-15
KR900013704A (ko) 1990-09-06
EP0385641A3 (fr) 1991-02-27
DE69015663D1 (de) 1995-02-16
SG30995G (en) 1995-08-18
FI97575B (fi) 1996-09-30
JPH07101821B2 (ja) 1995-11-01
CA2006683C (fr) 1995-06-20
JPH02291704A (ja) 1990-12-03
FI97575C (fi) 1997-01-10
EP0385641A2 (fr) 1990-09-05
US5105164A (en) 1992-04-14
FI900989A0 (fi) 1990-02-27
EP0385641B1 (fr) 1995-01-04
DE69015663T2 (de) 1995-05-18
CA2006683A1 (fr) 1990-08-31

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