ES2084664T3 - Circuito de control automatico de ganancia en un receptor de radio telefono. - Google Patents

Circuito de control automatico de ganancia en un receptor de radio telefono.

Info

Publication number
ES2084664T3
ES2084664T3 ES90311062T ES90311062T ES2084664T3 ES 2084664 T3 ES2084664 T3 ES 2084664T3 ES 90311062 T ES90311062 T ES 90311062T ES 90311062 T ES90311062 T ES 90311062T ES 2084664 T3 ES2084664 T3 ES 2084664T3
Authority
ES
Spain
Prior art keywords
gain control
amplification
control circuit
automatic gain
radio receiver
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES90311062T
Other languages
English (en)
Inventor
Risto Vaisanen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Oyj
Original Assignee
Nokia Mobile Phones Ltd
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 Nokia Mobile Phones Ltd filed Critical Nokia Mobile Phones Ltd
Application granted granted Critical
Publication of ES2084664T3 publication Critical patent/ES2084664T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/001—Digital control of analog signals

Landscapes

  • Circuits Of Receivers In General (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Superheterodyne Receivers (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Radio Relay Systems (AREA)

Abstract

EL PRESENTE INVENTO SE REFIERE A UN CIRCUITO DE CONTROL DE GANANCIA AUTOMATICA (AGC) EN UN RECEPTOR PARA UN RADIO TELEFONO DIGITAL. LA MAYOR PARTE DEL CONTROL DE GANANCIA TOTAL DE LA SEÑAL RECIBIDA SE CUMPLE EN LAS SECCIONES DE FRECUENCIA DE BANDA BASE, EN LAS RAMAS I Y Q DESDE DONDE SE CONTROLA LA AMPLIFICACION DE SEÑAL PASO A PASO, Y SOLO UNA MENOR PARTE DEL CONTROL DE GANANCIA TOTAL SE REALIZA EN LA ETAPA DE RF. SE FORMAN PASOS DE AMPLIFICACION ALTA MEDIANTE AMPLIFICADORES (9A,10A,11A,12A;9B,10B,11B,12B), DE LOS QUE SE ACTIVA EL AMPLIFICADOR DESEADO POR MEDIO DE UN MULTIPLICADOR (13A,13B) CONTROLADO DIGITALMENTE (A,B), Y SE FORMAN PASOS DE AMPLIFICACION BAJA POR MEDIO DE UN ATENUADOR DE RESISTENCIA (14A,14B), EN EL QUE SE SELECCIONA UNA SEÑAL DEL NIVEL DESEADO POR MEDIO DE UN MULTIPLICADOR (15A,15B) CONTROLADO DIGITALMENTE (C,D,E). ADEMAS, EL AMPLIFICADOR RF (2) TIENE DOS NIVELES DE AMPLIFICACION, DE LOS QUE SE SELECCIONA LA AMPLIFICACION DESEADA POR MEDIO DE UN CONTROL DIGITAL (F). MEDIANTE DIFERENTES COMBINACIONES DE CONTROL DIGITAL (A,B,C,D,E,F) PUEDE CUBRIRSE EL RANGO COMPLETO DE CONTROL DE GANANCIA REQUERIDO DEL RECEPTOR.
ES90311062T 1989-10-18 1990-10-09 Circuito de control automatico de ganancia en un receptor de radio telefono. Expired - Lifetime ES2084664T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI894966A FI88563C (fi) 1989-10-18 1989-10-18 Automatisk foerstaerkningregleringskoppling i radiotelefonens mottagare

Publications (1)

Publication Number Publication Date
ES2084664T3 true ES2084664T3 (es) 1996-05-16

Family

ID=8529188

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90311062T Expired - Lifetime ES2084664T3 (es) 1989-10-18 1990-10-09 Circuito de control automatico de ganancia en un receptor de radio telefono.

Country Status (6)

Country Link
EP (1) EP0424009B1 (es)
JP (1) JP3162700B2 (es)
AT (1) ATE135146T1 (es)
DE (1) DE69025697T2 (es)
ES (1) ES2084664T3 (es)
FI (1) FI88563C (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0511521U (ja) * 1991-07-17 1993-02-12 富士通テン株式会社 直交復調回路
JP2582828Y2 (ja) * 1992-11-04 1998-10-15 富士通テン株式会社 レベルコントロールダイレクト受信機
CN1307750A (zh) 1999-02-25 2001-08-08 三菱电机株式会社 无线电终端装置
FR2795259B1 (fr) * 1999-06-15 2007-05-11 Sagem Telephone mobile ayant une chaine de numerisation a gain variable rapidement et procede de numerisation par un tel telephone
EP2073383B1 (en) 2007-12-19 2011-08-10 Sequans Communications Amplifier arrangement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4598252A (en) * 1984-07-06 1986-07-01 Itt Corporation Variable gain power amplifier
US4792991A (en) * 1986-04-03 1988-12-20 Motorola, Inc. FM receiver having improved audio quality in response to Rayleigh faded received signals

Also Published As

Publication number Publication date
JPH03208433A (ja) 1991-09-11
DE69025697T2 (de) 1996-08-08
EP0424009B1 (en) 1996-03-06
DE69025697D1 (de) 1996-04-11
EP0424009A2 (en) 1991-04-24
JP3162700B2 (ja) 2001-05-08
FI88563C (fi) 1993-05-25
FI894966A0 (fi) 1989-10-18
ATE135146T1 (de) 1996-03-15
EP0424009A3 (en) 1992-05-06
FI88563B (fi) 1993-02-15

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