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 PDFInfo
- 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
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Classifications
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- 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)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (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.
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)
| 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 |
-
2000
- 2000-09-01 CA CA002381999A patent/CA2381999C/fr not_active Expired - Fee Related
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 |