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CA2381999C - Perfectionnement d'un procede et d'un appareil d'elevation et d'abaissement de frequence de signaux radio-frequence (rf) - Google Patents

Perfectionnement d'un procede et d'un appareil d'elevation et d'abaissement de frequence de signaux radio-frequence (rf) Download PDF

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Publication number
CA2381999C
CA2381999C CA002381999A CA2381999A CA2381999C CA 2381999 C CA2381999 C CA 2381999C CA 002381999 A CA002381999 A CA 002381999A CA 2381999 A CA2381999 A CA 2381999A CA 2381999 C CA2381999 C CA 2381999C
Authority
CA
Canada
Prior art keywords
signal
phi
synthesizer
mixing
frequency
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
CA002381999A
Other languages
English (en)
Other versions
CA2381999A1 (fr
Inventor
Tajinder Manku
Chris Snyder
Gareth Weale
Lawrence Wong
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
Sirific Wireless 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 Sirific Wireless ULC filed Critical Sirific Wireless ULC
Priority to CA002381999A priority Critical patent/CA2381999C/fr
Publication of CA2381999A1 publication Critical patent/CA2381999A1/fr
Application granted granted Critical
Publication of CA2381999C publication Critical patent/CA2381999C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

La présente invention concerne un procédé et un système qui vient à bout du problème des fuites d'oscillateur local des émetteurs et récepteurs radio à conversion directe et analogues. A cet effet, on génère un signal d'oscillateur local virtuel qui joue le rôle du mélange avec un signal d'oscillateur local. Toutefois, le signal de l'oscillateur local virtuel est construit à base de signaux qui ne véhiculent quasiment ou absolument par d'énergie pour le niveau de fréquence de sortie radio voulu. Il en résulte une absence de composante d'oscillateur local en fuite dans la sortie. L'invention ne nécessitant ainsi aucun filtre compliqué ni aucun condensateur de grande capacité comme dans le cas des autres conceptions, elle se prête totalement à l'intégration.
CA002381999A 1999-09-01 2000-09-01 Perfectionnement d'un procede et d'un appareil d'elevation et d'abaissement de frequence de signaux radio-frequence (rf) Expired - Fee Related CA2381999C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002381999A CA2381999C (fr) 1999-09-01 2000-09-01 Perfectionnement d'un procede et d'un appareil d'elevation et d'abaissement de frequence de signaux radio-frequence (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
CA002381999A CA2381999C (fr) 1999-09-01 2000-09-01 Perfectionnement d'un procede et d'un appareil d'elevation et d'abaissement de frequence de signaux radio-frequence (rf)
PCT/CA2000/000996 WO2001017122A1 (fr) 1999-09-01 2000-09-01 Perfectionnement d'un procede et d'un appareil d'elevation et d'abaissement de frequence de signaux radio-frequence (rf)

Publications (2)

Publication Number Publication Date
CA2381999A1 CA2381999A1 (fr) 2001-03-08
CA2381999C true CA2381999C (fr) 2009-11-24

Family

ID=25681160

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002381999A Expired - Fee Related CA2381999C (fr) 1999-09-01 2000-09-01 Perfectionnement d'un procede et d'un appareil d'elevation et d'abaissement de frequence de signaux radio-frequence (rf)

Country Status (1)

Country Link
CA (1) CA2381999C (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9431997B1 (en) * 2015-06-12 2016-08-30 Raytheon Company Interference signal cancellor with active tunable notch filter
CN114665951B (zh) * 2022-03-22 2023-06-06 中国电子科技集团公司第三十八研究所 星载q频段多载波合成装置及方法

Also Published As

Publication number Publication date
CA2381999A1 (fr) 2001-03-08

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed