BR0003788A - Circuito de amplificação de potência e método de amplificação de um sinal de frequência de rádio - Google Patents

Circuito de amplificação de potência e método de amplificação de um sinal de frequência de rádio

Info

Publication number
BR0003788A
BR0003788A BR0003788-5A BR0003788A BR0003788A BR 0003788 A BR0003788 A BR 0003788A BR 0003788 A BR0003788 A BR 0003788A BR 0003788 A BR0003788 A BR 0003788A
Authority
BR
Brazil
Prior art keywords
amplification circuit
peak
radio frequency
power amplification
frequency signal
Prior art date
Application number
BR0003788-5A
Other languages
English (en)
Other versions
BR0003788B1 (pt
Inventor
Armin Klomsdorf
William P Alberth Jr
Luke Edward Winkelmann
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 BR0003788A publication Critical patent/BR0003788A/pt
Publication of BR0003788B1 publication Critical patent/BR0003788B1/pt

Links

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
    • 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
    • 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
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits

Landscapes

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

Abstract

<B>CIRCUITO DE AMPLIFICAçãO DE POTêNCIA E MéTODO DE AMPLIFICAçãO DE UM SINAL DE FREQuêNCIA DE RáDIO<D> Um circuito de amplificação de potência (300) com um ajuste de carga para controle de potência de canal adjacente e alternado. Um amplificador de potência (172) amplifica um sinal de entrada, para produzir um sinal amplificado. Uma rede de impedância variável (174) apresenta impedâncias diferentes para a saída do amplificador de potência (172), em resposta a um sinal de controle de carga. Um detector de pico para média (180) provê uma indicação de uma relação de pico para média do sinal amplificado. Um controlador (184) acoplado ao detector de pico para média (180) e à rede de impedância variável (174) produz o sinal de controle de carga, em resposta à indicação da relação de pico para média.
BRPI0003788-5A 1999-07-22 2000-07-21 circuito de amplificaÇço de potÊncia e mÉtodo de amplificaÇço de um sinal de freqÜÊncia de rÁdio. BR0003788B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/358,884 US6160449A (en) 1999-07-22 1999-07-22 Power amplifying circuit with load adjust for control of adjacent and alternate channel power

Publications (2)

Publication Number Publication Date
BR0003788A true BR0003788A (pt) 2001-03-13
BR0003788B1 BR0003788B1 (pt) 2013-02-19

Family

ID=23411447

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0003788-5A BR0003788B1 (pt) 1999-07-22 2000-07-21 circuito de amplificaÇço de potÊncia e mÉtodo de amplificaÇço de um sinal de freqÜÊncia de rÁdio.

Country Status (8)

Country Link
US (1) US6160449A (pt)
JP (1) JP4611496B2 (pt)
KR (1) KR100372856B1 (pt)
CN (1) CN1185788C (pt)
BR (1) BR0003788B1 (pt)
DE (1) DE10035060B4 (pt)
FR (1) FR2797360B1 (pt)
GB (1) GB2352897B (pt)

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Also Published As

Publication number Publication date
KR20010015391A (ko) 2001-02-26
FR2797360B1 (fr) 2003-10-31
JP4611496B2 (ja) 2011-01-12
KR100372856B1 (ko) 2003-02-19
GB0017436D0 (en) 2000-08-30
FR2797360A1 (fr) 2001-02-09
BR0003788B1 (pt) 2013-02-19
DE10035060B4 (de) 2005-06-23
US6160449A (en) 2000-12-12
JP2001068940A (ja) 2001-03-16
CN1282143A (zh) 2001-01-31
GB2352897B (en) 2001-09-05
GB2352897A (en) 2001-02-07
CN1185788C (zh) 2005-01-19
DE10035060A1 (de) 2001-04-12

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