FR2382798A1 - Circuit de linearisation - Google Patents
Circuit de linearisationInfo
- Publication number
- FR2382798A1 FR2382798A1 FR7806048A FR7806048A FR2382798A1 FR 2382798 A1 FR2382798 A1 FR 2382798A1 FR 7806048 A FR7806048 A FR 7806048A FR 7806048 A FR7806048 A FR 7806048A FR 2382798 A1 FR2382798 A1 FR 2382798A1
- Authority
- FR
- France
- Prior art keywords
- input
- attenuator
- terminal
- linearization circuit
- circuit
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/08—Modifications of modulator to linearise modulation, e.g. by feedback, and clearly applicable to more than one type of modulator
Landscapes
- Amplitude Modulation (AREA)
- Transmitters (AREA)
Abstract
Circuit de linéarisation destiné à établir une relation non linéaire entre un signal d'entrée et un signal de sortie, de préférence pour compenser le défaut de linearité d'un modulateur de fréquence. Il comporte un atténuateur D constituant l'entrée du circuit, un diviseur de tension comportant deux résistances linéaires R1 et R2 et un élément résistant non linéaire R dont la résistance varie avec le courant passant dans cet élément, et un amplificateur F dont l'entrée est connectée à une borne de l'élément R alors que la sortie de l'atténuateur est connectée à l'autre borne de cet élément Domaine d'application : transmissions radio.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7702344A SE398946B (sv) | 1977-03-03 | 1977-03-03 | Lineariserande net |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2382798A1 true FR2382798A1 (fr) | 1978-09-29 |
FR2382798B1 FR2382798B1 (fr) | 1984-10-26 |
Family
ID=20330603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7806048A Granted FR2382798A1 (fr) | 1977-03-03 | 1978-03-02 | Circuit de linearisation |
Country Status (6)
Country | Link |
---|---|
US (1) | US4140981A (fr) |
AU (1) | AU514998B2 (fr) |
BR (1) | BR7801288A (fr) |
FR (1) | FR2382798A1 (fr) |
MX (1) | MX143918A (fr) |
SE (1) | SE398946B (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0160149A2 (fr) * | 1984-04-23 | 1985-11-06 | Hewlett-Packard Company | Circuits de mise en forme à prédistorsion |
EP0563440A1 (fr) * | 1992-03-31 | 1993-10-06 | Robert Bosch Gmbh | Modulateur de fréquence comportant un oscillateur commandé en tension et avec déviation de fréquence réduite |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4277763A (en) * | 1978-02-21 | 1981-07-07 | Ward Jr William H | Non-linear predistortion linearizing circuit for a varactor diode tuned oscillator |
US4500984A (en) * | 1982-09-29 | 1985-02-19 | International Telecommunications Satellite Organization | Equalizer for reducing crosstalk between two FDM/FM carriers in a satellite communications system |
US4633197A (en) * | 1985-03-29 | 1986-12-30 | Motorola, Inc. | Single resonant tank modulated oscillator |
US4866404A (en) * | 1988-09-15 | 1989-09-12 | General Electric Company | Phase locked frequency synthesizer with single input wideband modulation system |
US4864257A (en) * | 1988-09-15 | 1989-09-05 | General Electric Company | Phase locked frequency synthesizer with single input gain compensated wideband modulation system |
DE102006061511A1 (de) * | 2006-12-18 | 2008-06-26 | Atmel Germany Gmbh | Schaltungsanordnung zur Frequenzmodulation |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB653099A (en) * | 1948-06-22 | 1951-05-09 | British Broadcasting Corp | Improvements in and relating to valve amplifiers |
US3519954A (en) * | 1967-07-10 | 1970-07-07 | Marconi Instruments Ltd | Linearising circuit arrangements for voltage-sensitive capacitance diodes |
US3617947A (en) * | 1964-10-29 | 1971-11-02 | Garold K Jensen | Wide band frequency modulator |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4015079A (en) * | 1973-06-12 | 1977-03-29 | Tokyo Shibaura Electric Co., Ltd. | Gamma correction circuit |
US3986048A (en) * | 1973-08-10 | 1976-10-12 | Sony Corporation | Non-linear amplifier |
-
1977
- 1977-03-03 SE SE7702344A patent/SE398946B/xx not_active IP Right Cessation
-
1978
- 1978-02-21 US US05/879,736 patent/US4140981A/en not_active Expired - Lifetime
- 1978-02-23 AU AU33557/78A patent/AU514998B2/en not_active Expired
- 1978-03-01 MX MX172603A patent/MX143918A/es unknown
- 1978-03-02 FR FR7806048A patent/FR2382798A1/fr active Granted
- 1978-03-02 BR BR7801288A patent/BR7801288A/pt unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB653099A (en) * | 1948-06-22 | 1951-05-09 | British Broadcasting Corp | Improvements in and relating to valve amplifiers |
US3617947A (en) * | 1964-10-29 | 1971-11-02 | Garold K Jensen | Wide band frequency modulator |
US3519954A (en) * | 1967-07-10 | 1970-07-07 | Marconi Instruments Ltd | Linearising circuit arrangements for voltage-sensitive capacitance diodes |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0160149A2 (fr) * | 1984-04-23 | 1985-11-06 | Hewlett-Packard Company | Circuits de mise en forme à prédistorsion |
EP0160149A3 (en) * | 1984-04-23 | 1987-04-01 | Hewlett-Packard Company | Pre-distortion shaping networks |
EP0563440A1 (fr) * | 1992-03-31 | 1993-10-06 | Robert Bosch Gmbh | Modulateur de fréquence comportant un oscillateur commandé en tension et avec déviation de fréquence réduite |
Also Published As
Publication number | Publication date |
---|---|
MX143918A (es) | 1981-07-31 |
AU3355778A (en) | 1979-08-30 |
FR2382798B1 (fr) | 1984-10-26 |
BR7801288A (pt) | 1978-10-31 |
AU514998B2 (en) | 1981-03-12 |
SE398946B (sv) | 1978-01-23 |
US4140981A (en) | 1979-02-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |