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
English (en)
French (fr)
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. Schaltung zum Verstärken eines Hochfrequenzsignals mit einer veränderlichen Hüllkurve, mit einer Verstärkungsvorrichtung (110) mit ersten, zweiten und Steuerelektroden, einer Versorgungsspannungsquelle (VCC), Mitteln (115) zum Ankoppeln der ersten Elektrode der Vestärkungsvorrichtung an einen Ausgang, Mitteln (120) zum Bilden eines Hüllkurvenveränderungssignals aus dem Hochfrequenzsignal, Modulationsmitteln (140, 145) mit einem Eingangsanschluß und einem Paar von Ausgangsanschlüssen, die zum Modulieren des Signals an der ersten Elektrode der Verstärkungsvorrichtung zwischen die Versorgungsspannungsquelle und die erste Elektrode der Verstärkungsvorrichtung gekoppelt sind, auf das an den Ausgang angekoppelte Hochfrequenzsignal reagierenden Mitteln (125) zum Bilden eines den Hüllkurvenveränderungen des Hochfrequenzsignals am Ausgang entsprechenden Signals, auf das Hüllkurvenveränderungssignal und das den Hüllkurvenveränderungen des Hochfrequenzsignals am Ausgang entsprechende Signal reagierenden Mitteln (130) zum Erzeugen eines die Differenz zwischen diesen repräsentierenden Signals, und Mitteln (135) zum Anlegen des Differenzsignals an den Eingangsanschluß der Modulationsmittel zur Verringerung der Verzerrung in den Hüllkurvenveränderungen am Ausgang, gekennzeichnet durch eine an den Ausgang gekoppelte Belastungsvorrichtung (180) und Mittel (105) zum Bilden eines Hochfrequenzsignals mit konstanter Amplitude und zum Ankoppeln des Hochfrequenzsignals mit konstanter Amplitude an die Steuerelektrode der Verstärkungsvorrichtung.
  2. Schaltung nach Anspruch 1, wobei die Verstärkungsvorrichtung (110) eine nichtlineare Verstärkungsvorrichtung mit ersten, zweiten und Steuerelektroden ist.
  3. Schaltung nach Anspruch 2, wobei die nichtlineare Verstärkungsvorrichtung (110) eine Verstärkervorrichtung mit C-Verstärkung mit einer Basis, einem Emitter und einem Kollektor ist.
  4. Schaltung nach Anspruch 3, wobei die Modulationsmittel (140, 145) einen Impulsbreitenmodulator (340) umfassen.
  5. Schaltung nach einem der vorhergehenden Ansprüche, wobei das Hochfrequenzsignal einen im Winkel veränderlichen Träger besitzt und die Mittel zum Bilden eines Hochfrequenzsignals mit konstanter Amplitude zum Ankoppeln des im Winkel veränderlichen Trägers an die Steuerelektrode der Verstärkungsvorrichtung (310) dienen.
  6. Schaltung nach Anspruch 5, wobei der im Winkel veränderliche Träger ein frequenzveränderlicher Träger ist.
  7. Schaltung nach Anspruch 6, wobei der frequenzveränderliche Träger eine Mehrzahl von frequenzveränderlichen Signalen umfaßt.
  8. Schaltung nach Anspruch 5, wobei die Winkelveränderungen des Trägers Phasenveränderungen sind.
  9. Schaltung nach Anspruch 8, wobei die Phasenveränderungen eine M-ere Differenzphasenumtastungsmodulation mit vordefinierten Phasenverschiebungen umfassen und die Hüllkurvenveränderungen Hüllkurvenveränderungen zwischen den vordefinierten Phasenverschiebungen der MDPSK-Modulation sind.
  10. Schaltung nach Anspruch 1, wobei die Modulationsmittel (140, 145) einen Impulsbreitenmodulator (140) und zwischen den Impulsbreitenmodulator und die erste Elektrode gekoppelte Filtermittel (145) zum Entfernen von Hochfrequenzteilen der Impulsbreitenmodulatorausgabe umfassen.
  11. Schaltung nach einem der vorhergehenden Ansprüche, wobei die Mittel (120) zum Bilden des Hüllkurvenveränderungssignals eine erste Diode (570) und Mittel (574, 576) zum Vorspannen der ersten Diode umfassen, wobei die Mittel (125) zum Bilden des den Hüllkurvenveränderungen des Hochfrequenzsignals am Ausgang entsprechenden Signals eine zweite Diode (560) und Mittel (564, 567) zum Vorspannen der zweiten Diode umfassen, und die Mittel (564, 567, 574, 576) zum Vorspannen der ersten und zweiten Dioden (560, 570) so eingestellt sind, daß sie die ersten und zweiten Dioden (560, 570) auf im wesentlichen gleichartigen Betriebseigenschaften halten.
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 (de)
EP (1) EP0385641B1 (de)
JP (1) JPH07101821B2 (de)
KR (1) KR0135750B1 (de)
CA (1) CA2006683C (de)
DE (1) DE69015663T2 (de)
FI (1) FI97575C (de)
HK (1) HK5396A (de)
SG (1) SG30995G (de)

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Also Published As

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

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