BR9713881A - Amplificador de potência de estágios paralelos eficiente. - Google Patents

Amplificador de potência de estágios paralelos eficiente.

Info

Publication number
BR9713881A
BR9713881A BR9713881-9A BR9713881A BR9713881A BR 9713881 A BR9713881 A BR 9713881A BR 9713881 A BR9713881 A BR 9713881A BR 9713881 A BR9713881 A BR 9713881A
Authority
BR
Brazil
Prior art keywords
amplifier
stage
power
efficient parallel
amplified signal
Prior art date
Application number
BR9713881-9A
Other languages
English (en)
Other versions
BR9713881B1 (pt
Inventor
John F Sevic
Richard J Camarillo
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of BR9713881A publication Critical patent/BR9713881A/pt
Publication of BR9713881B1 publication Critical patent/BR9713881B1/pt

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/211Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0277Selecting one or more amplifiers from a plurality of amplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0288Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers using a main and one or several auxiliary peaking amplifiers whereby the load is connected to the main amplifier using an impedance inverter, e.g. Doherty amplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/60Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators
    • H03F3/602Combinations of several amplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G3/00Gain control in amplifiers or frequency changers
    • H03G3/20Automatic control
    • H03G3/30Automatic control in amplifiers having semiconductor devices
    • H03G3/3036Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02Transmitters
    • H04B1/04Circuits
    • H04B1/0483Transmitters with multiple parallel paths
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/294Indexing scheme relating to amplifiers the amplifier being a low noise amplifier [LNA]
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/372Noise reduction and elimination in amplifier
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2203/00Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/72Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • H03F2203/7236Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal the gated amplifier being switched on or off by putting into parallel or not, by choosing between amplifiers by (a ) switch(es)
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02Transmitters
    • H04B1/04Circuits
    • H04B2001/0408Circuits with power amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

Patente de Invenção: AMPLIFICADOR DE POTêNCIA DE ESTáGIOS PARALELOS EFICIENTE. Um circuito amplificador (40) para prover um sinal amplificado em resposta a um sinal de entrada ou alimentação. O circuito amplificador (40) inclui uma rede de alimentação (44) para a aplicação do sinal de alimentação a pelo menos um estágio de amplificador selecionado dentre uma pluralidade de estágios de amplificador. Uma rede de saída ou emissão (48) é provida para acoplar o sinal amplificado a partir do pelo menos um estágio de amplificador selecionado dentre uma pluralidade de estágios de amplificador. O estágio de amplificador apropriado é selecionado por um circuito de controle (56) em resposta a um valor de potência desejado para o sinal amplificado. Pela ativação seletiva somente do(s) estágio(s) de amplificador que é / são necessários para prover o nível desejado de potência de saída, pode ser conseguida maior eficiência de CC em aplicações que requerem um amplificador que opera linearmente dentro de uma ampla faixa dinâmica.
BRPI9713881-9A 1996-12-09 1997-12-05 circuito amplificador e método para prover um sinal amplificado em resposta a um sinal de entrada de rádio-freqüência. BR9713881B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/767,124 US5872481A (en) 1995-12-27 1996-12-09 Efficient parallel-stage power amplifier
PCT/US1997/022113 WO1998026503A1 (en) 1996-12-09 1997-12-05 Efficient parallel-stage power amplifier

Publications (2)

Publication Number Publication Date
BR9713881A true BR9713881A (pt) 2000-02-29
BR9713881B1 BR9713881B1 (pt) 2009-08-11

Family

ID=25078550

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9713881-9A BR9713881B1 (pt) 1996-12-09 1997-12-05 circuito amplificador e método para prover um sinal amplificado em resposta a um sinal de entrada de rádio-freqüência.

Country Status (12)

Country Link
US (1) US5872481A (pt)
EP (1) EP0941575B1 (pt)
JP (1) JP4024867B2 (pt)
KR (1) KR100560335B1 (pt)
CN (1) CN1148870C (pt)
AU (1) AU724403B2 (pt)
BR (1) BR9713881B1 (pt)
CA (1) CA2273151C (pt)
DE (1) DE69727962T2 (pt)
HK (1) HK1022794A1 (pt)
IL (1) IL130120A (pt)
WO (1) WO1998026503A1 (pt)

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US5872481A (en) 1999-02-16
WO1998026503A1 (en) 1998-06-18
DE69727962D1 (de) 2004-04-08
CN1269066A (zh) 2000-10-04
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CN1148870C (zh) 2004-05-05
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EP0941575A1 (en) 1999-09-15
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IL130120A0 (en) 2000-06-01
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CA2273151A1 (en) 1998-06-18
HK1022794A1 (en) 2000-08-18
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BR9713881B1 (pt) 2009-08-11
JP2001524275A (ja) 2001-11-27

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