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CA2381998C - Technique et dispositif ameliores pour transposition elevatrice de signaux de radiofrequence (rf) - Google Patents

Technique et dispositif ameliores pour transposition elevatrice de signaux de radiofrequence (rf) Download PDF

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Publication number
CA2381998C
CA2381998C CA2381998A CA2381998A CA2381998C CA 2381998 C CA2381998 C CA 2381998C CA 2381998 A CA2381998 A CA 2381998A CA 2381998 A CA2381998 A CA 2381998A CA 2381998 C CA2381998 C CA 2381998C
Authority
CA
Canada
Prior art keywords
phi
signal
convertor
radio frequency
mixing
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 - Fee Related
Application number
CA2381998A
Other languages
English (en)
Other versions
CA2381998A1 (fr
Inventor
Tajinder Manku
Chris Snyder
Gareth Weale
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.)
Icera Canada ULC
Original Assignee
Icera Canada ULC
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
Priority claimed from CA2281236A external-priority patent/CA2281236C/fr
Application filed by Icera Canada ULC filed Critical Icera Canada ULC
Priority to CA2381998A priority Critical patent/CA2381998C/fr
Publication of CA2381998A1 publication Critical patent/CA2381998A1/fr
Application granted granted Critical
Publication of CA2381998C publication Critical patent/CA2381998C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • H03D3/008—Compensating DC offsets
    • 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
    • H03D7/16—Multiple-frequency-changing
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
    • H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
    • 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
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages
    • 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
    • H04B1/0475—Circuits with means for limiting noise, interference or distortion

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

Cette invention concerne une technique et un dispositif permettant de résoudre le problème de fuite au niveau de l'oscillateur local en cas de conversion directe et emploi d'émetteurs RF analogues. Pour résoudre ce problème, on génère au sein de la bande de base un signal d'oscillateur local virtuel qui est syntonisé avec le signal RF entrant. Le signal d'oscillateur local virtuel (VLO) est obtenu au moyen de signaux n'ayant pas de puissance significative (voire n'ayant aucune puissance) à la fréquence RF d'entrée recherchée. Toute erreur survenue dans la production du signal de l'oscillateur local virtuel est réduite au minimum au moyen d'un système de correction à boucle fermée.
CA2381998A 1999-09-01 2000-09-01 Technique et dispositif ameliores pour transposition elevatrice de signaux de radiofrequence (rf) Expired - Fee Related CA2381998C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2381998A CA2381998C (fr) 1999-09-01 2000-09-01 Technique et dispositif ameliores pour transposition elevatrice de signaux de radiofrequence (rf)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA2281236A CA2281236C (fr) 1999-09-01 1999-09-01 Methodes rf de conversion directe au moyen d'un signal virtuel d'oscillateur local
CA2,281,236 1999-09-01
PCT/CA2000/000995 WO2001017121A1 (fr) 1999-09-01 2000-09-01 Technique et dispositif ameliores pour transposition elevatrice de signaux de radiofrequence (rf)
CA2381998A CA2381998C (fr) 1999-09-01 2000-09-01 Technique et dispositif ameliores pour transposition elevatrice de signaux de radiofrequence (rf)

Publications (2)

Publication Number Publication Date
CA2381998A1 CA2381998A1 (fr) 2001-03-08
CA2381998C true CA2381998C (fr) 2010-02-16

Family

ID=25681159

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2381998A Expired - Fee Related CA2381998C (fr) 1999-09-01 2000-09-01 Technique et dispositif ameliores pour transposition elevatrice de signaux de radiofrequence (rf)

Country Status (1)

Country Link
CA (1) CA2381998C (fr)

Also Published As

Publication number Publication date
CA2381998A1 (fr) 2001-03-08

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