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MXPA04007180A - Transceptor que utiliza un mezclador para rechazo de armonicas. - Google Patents

Transceptor que utiliza un mezclador para rechazo de armonicas.

Info

Publication number
MXPA04007180A
MXPA04007180A MXPA04007180A MXPA04007180A MXPA04007180A MX PA04007180 A MXPA04007180 A MX PA04007180A MX PA04007180 A MXPA04007180 A MX PA04007180A MX PA04007180 A MXPA04007180 A MX PA04007180A MX PA04007180 A MXPA04007180 A MX PA04007180A
Authority
MX
Mexico
Prior art keywords
intermediate frequency
signal
phase
locked loop
rejection mixer
Prior art date
Application number
MXPA04007180A
Other languages
English (en)
Inventor
Szabo Sandor
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 MXPA04007180A publication Critical patent/MXPA04007180A/es

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0966—Modifications of modulator for regulating the mean frequency using a phase locked loop modulating the reference clock
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/18—Modifications of frequency-changers for eliminating image frequencies
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • H03L7/185—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number using a mixer in the loop
    • 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041—Functional aspects of demodulators
    • H03D2200/0086—Reduction or prevention of harmonic frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transceivers (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Un transceptor inalambrico incluye un transmisor que tiene un mezclador para rechazo de armonicas y un bucle de enganche de fase de salida de RF en una arquitectura de conversion ascendente de dos pasos, y un receptor de conversion directa. El transmisor incluye un oscilador local para producir una senal a un multiplo de una frecuencia intermedia, un mezclador para rechazo de armonicas del modulador de cuadratura que responde a la senal al multiplo de la frecuencia intermedia para modular senales de banda base en fase y en cuadratura de fase para producir una senal de frecuencia intermedia, una senal conmutable que responde a la senal de frecuencia intermedia para producir una senal de frecuencia intermedia filtrada, y un bucle de enganche de fase desplazado en frecuencia de salida de RF que responde a la senal de frecuencia intermedia filtrada y a la senal al multiplo de la frecuencia intermedia para producir una senal de transmision de RF. El mezclador para rechazo de armonicas reduce los requerimientos de filtracion para facilitar un nivel elevado de integracion de circuitos mientras que el bucle de enganche de fase desplazado en frecuencias de salida reduce el consumo de energia. La capacidad de conmutacion del filtro permite la utilizacion del transceptor para comunicaciones en EGSM, DCS o PCS. El oscilador local puede utilizar un bucle de enganche de fase N entera o fraccionada.
MXPA04007180A 2002-01-25 2003-01-27 Transceptor que utiliza un mezclador para rechazo de armonicas. MXPA04007180A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US35186902P 2002-01-25 2002-01-25
US10/350,407 US7167686B2 (en) 2002-01-25 2003-01-24 Wireless communications transceiver: transmitter using a harmonic rejection mixer and an RF output offset phase-locked loop in a two-step up-conversion architecture and receiver using direct conversion architecture
PCT/US2003/002476 WO2003065585A1 (en) 2002-01-25 2003-01-27 Transceiver using a harmonic rejection mixer

Publications (1)

Publication Number Publication Date
MXPA04007180A true MXPA04007180A (es) 2004-10-29

Family

ID=27669009

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA04007180A MXPA04007180A (es) 2002-01-25 2003-01-27 Transceptor que utiliza un mezclador para rechazo de armonicas.

Country Status (11)

Country Link
US (1) US7167686B2 (es)
EP (1) EP1468494A1 (es)
JP (1) JP2005516519A (es)
KR (1) KR100954707B1 (es)
CN (1) CN100347965C (es)
BR (1) BR0307099A (es)
CA (1) CA2474129A1 (es)
IL (1) IL163083A (es)
MX (1) MXPA04007180A (es)
RU (1) RU2004125847A (es)
WO (1) WO2003065585A1 (es)

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Also Published As

Publication number Publication date
RU2004125847A (ru) 2005-04-10
EP1468494A1 (en) 2004-10-20
BR0307099A (pt) 2005-02-01
US7167686B2 (en) 2007-01-23
CN1643795A (zh) 2005-07-20
JP2005516519A (ja) 2005-06-02
CN100347965C (zh) 2007-11-07
KR20040078135A (ko) 2004-09-08
KR100954707B1 (ko) 2010-04-23
CA2474129A1 (en) 2003-08-07
US20040005869A1 (en) 2004-01-08
IL163083A (en) 2010-11-30
WO2003065585A1 (en) 2003-08-07
HK1073943A1 (en) 2005-10-21

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