DE69904584D1 - Neutralisierungsverfahren für eine senderröhre - Google Patents
Neutralisierungsverfahren für eine senderröhreInfo
- Publication number
- DE69904584D1 DE69904584D1 DE69904584T DE69904584T DE69904584D1 DE 69904584 D1 DE69904584 D1 DE 69904584D1 DE 69904584 T DE69904584 T DE 69904584T DE 69904584 T DE69904584 T DE 69904584T DE 69904584 D1 DE69904584 D1 DE 69904584D1
- Authority
- DE
- Germany
- Prior art keywords
- neutralization process
- transmitter tube
- transmitter
- tube
- neutralization
- 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
Links
- 238000000034 method Methods 0.000 title 1
- 238000006386 neutralization reaction Methods 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
- H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
- H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion
- H04L27/368—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion adaptive predistortion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
- H03F1/14—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
- H03F1/16—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means in discharge-tube amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
-
- 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
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/0425—Circuits with power amplifiers with linearisation using predistortion
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Transmitters (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9805180A FR2778041A1 (fr) | 1998-04-24 | 1998-04-24 | Procede de neutrodynage du tube d'un emetteur |
PCT/FR1999/000901 WO1999056400A1 (fr) | 1998-04-24 | 1999-04-16 | Procede de neutrodynage du tube d'un emetteur |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69904584D1 true DE69904584D1 (de) | 2003-01-30 |
DE69904584T2 DE69904584T2 (de) | 2003-08-14 |
Family
ID=9525653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69904584T Expired - Fee Related DE69904584T2 (de) | 1998-04-24 | 1999-04-16 | Neutralisierungsverfahren für eine senderröhre |
Country Status (6)
Country | Link |
---|---|
US (1) | US6738431B1 (de) |
EP (1) | EP1074092B1 (de) |
JP (1) | JP2002513236A (de) |
DE (1) | DE69904584T2 (de) |
FR (1) | FR2778041A1 (de) |
WO (1) | WO1999056400A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7065154B2 (en) * | 2000-12-29 | 2006-06-20 | Nokia Corporation | Baseband predistortion method for multicarrier transmitters |
CN101789912B (zh) | 2009-01-23 | 2012-06-27 | 华为技术有限公司 | 更新分组数据网络网关信息的方法、装置及*** |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7303466A (de) * | 1973-03-13 | 1974-09-17 | ||
FR2283592A1 (fr) * | 1974-08-27 | 1976-03-26 | Thomson Csf | Dispositif extracteur de synchronisation et systeme de transmission d'informations comportant un tel dispositif |
FR2431229A1 (fr) * | 1978-07-12 | 1980-02-08 | Thomson Csf | Dispositif de demodulation de signaux modules en deplacement de frequence et systeme de transmission comportant un tel dispositif |
FR2546001B1 (fr) * | 1983-05-10 | 1985-07-05 | Thomson Csf | Demodulateur de signaux, a enveloppe constante et phase continue, modules angulairement par un train de symboles binaires |
FR2604318B1 (fr) * | 1986-09-23 | 1989-03-31 | Thomson Csf | Procede et dispositif de synchronisation symbole et leur application a la demodulation symbole de messages numeriques |
FR2605769B1 (fr) * | 1986-10-22 | 1988-12-09 | Thomson Csf | Operateur polynomial dans les corps de galois et processeur de traitement de signal numerique comportant un tel operateur |
FR2605818B1 (fr) * | 1986-10-27 | 1992-09-18 | Thomson Csf | Codeur-decodeur algebrique de codes en blocs reed solomon et bch, applicable aux telecommunications numeriques |
FR2607987B1 (fr) * | 1986-12-05 | 1989-02-10 | Thomson Csf | Procede et dispositif de modulation et de demodulation a plusieurs etats, a niveau de protection ajustable |
FR2631146B1 (fr) * | 1988-05-04 | 1991-05-10 | Thomson Csf | Procede et dispositif de codage de l'energie du signal vocal dans des vocodeurs a tres faibles debits |
FR2631147B1 (fr) * | 1988-05-04 | 1991-02-08 | Thomson Csf | Procede et dispositif de detection de signaux vocaux |
FR2635420B1 (fr) * | 1988-07-19 | 1990-10-19 | Thomson Csf | Procede et dispositif de demodulation de signaux a enveloppe constante et phase continue modules angulairement par un train de symboles binaires, tolerant les derives de frequence |
FR2652470A1 (fr) * | 1989-09-28 | 1991-03-29 | Alcatel Transmission | Procede et dispositif de limitation des remontees de lobes secondaires dans une installation d'emission de puissance pour monoporteuse numerique a deux ou quatre etats de phase. |
FR2654542B1 (fr) * | 1989-11-14 | 1992-01-17 | Thomson Csf | Procede et dispositif de codage de filtres predicteurs de vocodeurs tres bas debit. |
FR2670313A1 (fr) * | 1990-12-11 | 1992-06-12 | Thomson Csf | Procede et dispositif pour l'evaluation de la periodicite et du voisement du signal de parole dans les vocodeurs a tres bas debit. |
FR2690551B1 (fr) * | 1991-10-15 | 1994-06-03 | Thomson Csf | Procede de quantification d'un filtre predicteur pour vocodeur a tres faible debit. |
IT1265271B1 (it) * | 1993-12-14 | 1996-10-31 | Alcatel Italia | Sistema di predistorsione in banda base per la linearizzazione adattativa di amplificatori di potenza |
FR2738383B1 (fr) * | 1995-09-05 | 1997-10-03 | Thomson Csf | Procede de quantification vectorielle de vocodeurs bas debit |
US6081158A (en) * | 1997-06-30 | 2000-06-27 | Harris Corporation | Adaptive pre-distortion apparatus for linearizing an amplifier output within a data transmission system |
-
1998
- 1998-04-24 FR FR9805180A patent/FR2778041A1/fr not_active Withdrawn
-
1999
- 1999-04-16 EP EP99914600A patent/EP1074092B1/de not_active Expired - Lifetime
- 1999-04-16 WO PCT/FR1999/000901 patent/WO1999056400A1/fr active IP Right Grant
- 1999-04-16 JP JP2000546461A patent/JP2002513236A/ja not_active Abandoned
- 1999-04-16 DE DE69904584T patent/DE69904584T2/de not_active Expired - Fee Related
-
2000
- 2000-04-16 US US09/674,011 patent/US6738431B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2002513236A (ja) | 2002-05-08 |
FR2778041A1 (fr) | 1999-10-29 |
EP1074092B1 (de) | 2002-12-18 |
WO1999056400A1 (fr) | 1999-11-04 |
DE69904584T2 (de) | 2003-08-14 |
EP1074092A1 (de) | 2001-02-07 |
US6738431B1 (en) | 2004-05-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |