IT1280698B1 - Procedimento ed apparecchio per aumentare l'efficienza di un amplificatore - Google Patents

Procedimento ed apparecchio per aumentare l'efficienza di un amplificatore

Info

Publication number
IT1280698B1
IT1280698B1 IT95RM000714A ITRM950714A IT1280698B1 IT 1280698 B1 IT1280698 B1 IT 1280698B1 IT 95RM000714 A IT95RM000714 A IT 95RM000714A IT RM950714 A ITRM950714 A IT RM950714A IT 1280698 B1 IT1280698 B1 IT 1280698B1
Authority
IT
Italy
Prior art keywords
circuitry
amplifier
produced
amplification
control
Prior art date
Application number
IT95RM000714A
Other languages
English (en)
Inventor
Jr William P Albert
John J Janssen
Armin Klomsdorf
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of ITRM950714A0 publication Critical patent/ITRM950714A0/it
Publication of ITRM950714A1 publication Critical patent/ITRM950714A1/it
Application granted granted Critical
Publication of IT1280698B1 publication Critical patent/IT1280698B1/it

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/007—Control dependent on the supply voltage
    • 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
    • H03F1/0233—Continuous control by using a signal derived from the output signal, e.g. bootstrapping the voltage supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

Un trasmettitore (107) comprende una circuiteria di amplificazione (203) ed una circuiteria di controllo (215, 217, 219) per polarizzare la circuiteria di amplificazione (203) in modo tale che essa operi in maggiore prossimità al punto di saturazione con aumentato rendimento. Il segnale di tensione di abilitazione o di gate (213) che fornisce la polarizzazione di gate viene applicato alla circuiteria di amplificazione (203) e viene fatto dinamicamente variare dalla circuiteria di elaborazione (219) in risposta al valore della tensione di controllo (211) dell'amplificatore applicata alla circuiteria di amplificazione (203). La tensione (211) di controllo dell'amplificatore, la quale presenta un valore idoneo a mantenere costante la potenza di uscita della circuiteria di amplificazione (203). viene prodotta da una circuiteria di integrazione (217) in risposta ad un confronto fra il segnale di uscita di potenza rivelato (216) prodotto dalla circuiteria di rivelazione (215) ed il segnale di controllo di uscita di potenza (218) prodotto dalla circuiteria.
IT95RM000714A 1994-11-01 1995-10-30 Procedimento ed apparecchio per aumentare l'efficienza di un amplificatore IT1280698B1 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/332,968 US5589796A (en) 1994-11-01 1994-11-01 Method and apparatus for increasing amplifier efficiency

Publications (3)

Publication Number Publication Date
ITRM950714A0 ITRM950714A0 (it) 1995-10-30
ITRM950714A1 ITRM950714A1 (it) 1997-04-30
IT1280698B1 true IT1280698B1 (it) 1998-01-30

Family

ID=23300669

Family Applications (1)

Application Number Title Priority Date Filing Date
IT95RM000714A IT1280698B1 (it) 1994-11-01 1995-10-30 Procedimento ed apparecchio per aumentare l'efficienza di un amplificatore

Country Status (9)

Country Link
US (1) US5589796A (it)
JP (1) JPH08316743A (it)
CN (1) CN1074609C (it)
BR (1) BR9505070A (it)
CA (1) CA2160750C (it)
FR (1) FR2726410B1 (it)
GB (1) GB2294833B (it)
IT (1) IT1280698B1 (it)
MX (1) MX9504610A (it)

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Also Published As

Publication number Publication date
CN1128916A (zh) 1996-08-14
CA2160750A1 (en) 1996-05-02
BR9505070A (pt) 1997-10-14
FR2726410B1 (fr) 1998-01-30
CA2160750C (en) 1999-04-20
JPH08316743A (ja) 1996-11-29
MX9504610A (es) 1997-05-31
ITRM950714A0 (it) 1995-10-30
CN1074609C (zh) 2001-11-07
GB2294833B (en) 1999-07-21
ITRM950714A1 (it) 1997-04-30
US5589796A (en) 1996-12-31
FR2726410A1 (fr) 1996-05-03
GB2294833A (en) 1996-05-08
GB9522038D0 (en) 1996-01-03

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