WO2002035712A3 - Emetteurs radio - Google Patents
Emetteurs radio Download PDFInfo
- Publication number
- WO2002035712A3 WO2002035712A3 PCT/GB2001/004705 GB0104705W WO0235712A3 WO 2002035712 A3 WO2002035712 A3 WO 2002035712A3 GB 0104705 W GB0104705 W GB 0104705W WO 0235712 A3 WO0235712 A3 WO 0235712A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- frequency
- mixer
- produce
- output signal
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C1/00—Amplitude modulation
- H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
- H03C1/60—Modulators in which carrier or one sideband is wholly or partially suppressed with one sideband wholly or partially suppressed
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B21/00—Generation of oscillations by combining unmodulated signals of different frequencies
- H03B21/01—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different 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
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0491—Circuits with frequency synthesizers, frequency converters or modulators
Landscapes
- Transmitters (AREA)
Abstract
Un agencement de synthétiseur de signal comprend un générateur de signal sous forme d'oscillateur à tension variable (10) qui génère un signal source de haute fréquence sous la commande d'une unité (16) de commande. Cette unité (16) de commande de synthétiseur commande l'oscillateur (10) de façon à produire un signal de sortie d'une fréquence donnée. Ce signal de sortie de fréquence F1 provenant de l'oscillateur (10) est fourni à un mélangeur (12) de signaux. Il est aussi entré dans un diviseur (15) de fréquence, qui le divise par une valeur N1 de façon à produire un signal F2 à fréquence décalée qui est également fourni au mélangeur (12). Ce mélangeur (12) combine ces signaux et fournit le signal combiné à un filtre (11) passe bande qui filtre ce signal combiné de façon à sélectionner et fournir un des signaux de «bande latérale» produits par le mélangeur, à savoir F1 + F2, ou F1 - F2, comme signal de sortie F3, tout en supprimant l'autre signal de bande latérale non retenu. Ce signal de sortie F3 en provenance du filtre (11) est à nouveau divisé en fréquence par une seconde valeur N2 dans un autre diviseur (17) de fréquence de façon à produire en sortie un signal de fréquence F qui peut être utilisé comme signal de fréquence de porteuse pour un émetteur radio.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01978599A EP1330881A2 (fr) | 2000-10-23 | 2001-10-23 | Emetteurs radio |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0025902A GB0025902D0 (en) | 2000-10-23 | 2000-10-23 | Radio transmitters |
GB0025902.8 | 2000-10-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002035712A2 WO2002035712A2 (fr) | 2002-05-02 |
WO2002035712A3 true WO2002035712A3 (fr) | 2002-09-06 |
Family
ID=9901793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2001/004705 WO2002035712A2 (fr) | 2000-10-23 | 2001-10-23 | Emetteurs radio |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1330881A2 (fr) |
GB (2) | GB0025902D0 (fr) |
WO (1) | WO2002035712A2 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI633760B (zh) * | 2016-01-29 | 2018-08-21 | 立積電子股份有限公司 | 訊號發射器 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2100534A (en) * | 1981-06-16 | 1982-12-22 | Standard Telephones Cables Ltd | Frequency synthesiser |
JPH0964734A (ja) * | 1995-08-21 | 1997-03-07 | Sony Corp | Pll回路および受信機 |
US6087865A (en) * | 1994-12-22 | 2000-07-11 | Anritsu Company | Programmable frequency divider |
WO2001001562A1 (fr) * | 1999-06-24 | 2001-01-04 | Siemens Aktiengesellschaft | Circuit electronique permettant de produire une frequence d'emission |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2595783B2 (ja) * | 1990-07-31 | 1997-04-02 | 日本電気株式会社 | 送信器 |
-
2000
- 2000-10-23 GB GB0025902A patent/GB0025902D0/en not_active Ceased
-
2001
- 2001-10-23 EP EP01978599A patent/EP1330881A2/fr not_active Withdrawn
- 2001-10-23 WO PCT/GB2001/004705 patent/WO2002035712A2/fr not_active Application Discontinuation
- 2001-10-23 GB GB0125455A patent/GB2372163A/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2100534A (en) * | 1981-06-16 | 1982-12-22 | Standard Telephones Cables Ltd | Frequency synthesiser |
US6087865A (en) * | 1994-12-22 | 2000-07-11 | Anritsu Company | Programmable frequency divider |
JPH0964734A (ja) * | 1995-08-21 | 1997-03-07 | Sony Corp | Pll回路および受信機 |
WO2001001562A1 (fr) * | 1999-06-24 | 2001-01-04 | Siemens Aktiengesellschaft | Circuit electronique permettant de produire une frequence d'emission |
Non-Patent Citations (2)
Title |
---|
KARLQUIST R: "A narrow band high-resolution synthesizer using a direct digital synthesizer followed by repeated dividing and mixing", FREQUENCY CONTROL SYMPOSIUM, 1995. 49TH., PROCEEDINGS OF THE 1995 IEEE INTERNATIONAL SAN FRANCISCO, CA, USA 31 MAY-2 JUNE 1995, NEW YORK, NY, USA,IEEE, US, 31 May 1995 (1995-05-31), pages 217 - 235, XP010155176, ISBN: 0-7803-2500-1 * |
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 07 31 July 1997 (1997-07-31) * |
Also Published As
Publication number | Publication date |
---|---|
GB2372163A (en) | 2002-08-14 |
EP1330881A2 (fr) | 2003-07-30 |
WO2002035712A2 (fr) | 2002-05-02 |
GB0125455D0 (en) | 2001-12-12 |
GB0025902D0 (en) | 2000-12-06 |
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