MX9706993A - Circuito de control de potencia para un transmisor de radiofrecuencia. - Google Patents

Circuito de control de potencia para un transmisor de radiofrecuencia.

Info

Publication number
MX9706993A
MX9706993A MX9706993A MX9706993A MX9706993A MX 9706993 A MX9706993 A MX 9706993A MX 9706993 A MX9706993 A MX 9706993A MX 9706993 A MX9706993 A MX 9706993A MX 9706993 A MX9706993 A MX 9706993A
Authority
MX
Mexico
Prior art keywords
gain
output power
power level
control signal
radio frequency
Prior art date
Application number
MX9706993A
Other languages
English (en)
Other versions
MXPA97006993A (es
Inventor
Randall W Rich
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 MX9706993A publication Critical patent/MX9706993A/es
Publication of MXPA97006993A publication Critical patent/MXPA97006993A/es

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
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/10—Open loop power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers

Landscapes

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

Abstract

Un controlador de ganancia (130) para un transmisor (102) de radiofrecuencia (RF) controla el nivel de potencia de una señal (123) transmitida dentro de una gama predeterminada de niveles de potencia de salida. El controlador (130) de ganancia proporciona la primera señal (131) de control de ganancia y la segunda señal (133) de control de ganancia, en respuesta a una señal (150) de control del nivel de potencia de salida. La primer señal (131) de control de ganancia controla la ganancia de una primer etapa de ganancia variable (144) para varia el nivel de potencia de la señal de transmision (115) a una frecuencia intermedia, que ocasiona que el nivel de potencia de salida de la señal de transmision (123) varíe sobre una gama inferior de la gama predeterminada de niveles de potencia de salida. La segunda señal (133) de control de ganancia controla la ganancia de la segunda etapa de ganancia variable (120) para varia el nivel de potencia de la señal de transmision (121) a una radiofrecuencia que ocasiona que el nivel de potencia de salida de la señal de transmision (123) varíe sobre una gama superior de la gama predeterminada de niveles de potencia de salida. El circuito (130) de control de potencia se utiliza de manera ventajosa en un radioteléfono (100) con acceso multiple por division de codigo (CDMA) para proporcionar control de potencia sobre una gama de 85 dB de niveles de potencia al tiempo que reduce al mínimo las emisiones de ruido de la banda lateral, el consumo de corriente y la complejidad del transmisor (102) de RF.
MXPA/A/1997/006993A 1996-09-13 1997-09-12 Circuito de control de potencia para un transmisor de radiofrecuencia MXPA97006993A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/713,911 US5862460A (en) 1996-09-13 1996-09-13 Power control circuit for a radio frequency transmitter
US08713911 1996-09-13

Publications (2)

Publication Number Publication Date
MX9706993A true MX9706993A (es) 1998-03-31
MXPA97006993A MXPA97006993A (es) 1998-10-15

Family

ID=

Also Published As

Publication number Publication date
GB2317283B (en) 2001-04-25
CA2212950A1 (en) 1998-03-13
US5862460A (en) 1999-01-19
CN1096151C (zh) 2002-12-11
CN1179038A (zh) 1998-04-15
JPH10107654A (ja) 1998-04-24
DE19739320A1 (de) 1998-04-09
GB9716841D0 (en) 1997-10-15
KR19980024607A (ko) 1998-07-06
KR100259680B1 (ko) 2000-06-15
GB2317283A (en) 1998-03-18
BR9704706A (pt) 1999-01-19

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Legal Events

Date Code Title Description
FG Grant or registration
MM Annulment or lapse due to non-payment of fees