FR2418979A1 - Circuit de modulation en amplitude - Google Patents

Circuit de modulation en amplitude

Info

Publication number
FR2418979A1
FR2418979A1 FR7905370A FR7905370A FR2418979A1 FR 2418979 A1 FR2418979 A1 FR 2418979A1 FR 7905370 A FR7905370 A FR 7905370A FR 7905370 A FR7905370 A FR 7905370A FR 2418979 A1 FR2418979 A1 FR 2418979A1
Authority
FR
France
Prior art keywords
amplitude modulation
modulation circuit
tetrode
drives
series
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
Application number
FR7905370A
Other languages
English (en)
Other versions
FR2418979B1 (fr
Inventor
David Cooper
Philip John Davidson
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
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
Application filed by Marconi Co Ltd filed Critical Marconi Co Ltd
Publication of FR2418979A1 publication Critical patent/FR2418979A1/fr
Application granted granted Critical
Publication of FR2418979B1 publication Critical patent/FR2418979B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/16—Amplitude modulation by means of discharge device having at least three electrodes

Landscapes

  • Amplifiers (AREA)
  • Amplitude Modulation (AREA)
  • Filters And Equalizers (AREA)

Abstract

L'invention se rapporte à un circuit de modulation en amplitude utilisant un modulateur de largeur d'impulsion. Il comprend une tétrode 1 branchée en série avec une diode 2 à une source 3 de tension continue, la tétrode 1 constituant le modulateur. La tétrode attaque un filtre passe-bas 6 dont les bornes d'entrée 4 et 5 sont également reliées à un second filtre 7 constitué par un circuit série comprenant une self 8 et une capacité 9. La paire de bornes de sortie 10 et 11 attaque une charge représentée par une résistance 12. Le circuit de modulation en amplitude trouve son application dans la formation de signaux haute fréquence modulés en amplitude pour les émetteurs.
FR7905370A 1978-03-02 1979-03-01 Circuit de modulation en amplitude Granted FR2418979A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8223/78A GB1551711A (en) 1978-03-02 1978-03-02 Modulation circuits

Publications (2)

Publication Number Publication Date
FR2418979A1 true FR2418979A1 (fr) 1979-09-28
FR2418979B1 FR2418979B1 (fr) 1983-01-14

Family

ID=9848316

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7905370A Granted FR2418979A1 (fr) 1978-03-02 1979-03-01 Circuit de modulation en amplitude

Country Status (5)

Country Link
US (1) US4250469A (fr)
DE (1) DE2816105C2 (fr)
FR (1) FR2418979A1 (fr)
GB (1) GB1551711A (fr)
IT (1) IT1119674B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4272737A (en) * 1979-05-25 1981-06-09 The Marconi Company Limited Pulse width modulator for amplitude modulation circuit
JPS61161005A (ja) * 1985-01-09 1986-07-21 Nec Corp 振幅変調送信機
US6208121B1 (en) 1998-01-20 2001-03-27 Iap Research, Inc. Switching power supply with AC waveform capability
CN115514210B (zh) * 2022-11-09 2023-03-07 深圳市科信通信技术股份有限公司 一种pfc变换器控制系统及其控制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1674705A (en) * 1928-06-26 Reactance neutralizing network
DE1218557B (de) * 1963-02-08 1966-06-08 Telefunken Patent Modulationsschaltung zur Anodenspannungs-modulation einer Hochfrequenzsenderendstufe
FR1465124A (fr) * 1965-01-22 1967-01-06 Int Standard Electric Corp Perfectionnements aux amplificateurs haute fréquence transistorisés à rendement élevé
FR1591798A (fr) * 1966-02-10 1970-05-04
USRE27062E (en) * 1961-07-28 1971-02-16 Low pass filter for coupling continuous signal through periodically closed gate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968010A (en) * 1958-01-06 1961-01-10 North American Aviation Inc Amplitude modulator
US3384838A (en) * 1965-03-19 1968-05-21 Sylvania Electric Prod Phase reversible switching power amplifier
US3435378A (en) * 1966-03-25 1969-03-25 Communications Patents Ltd Apparatus for generating modulated waves from pulse-type modulating signal
GB1184968A (en) * 1968-06-28 1970-03-18 Collins Radio Co High Efficiency RF Power Amplification
CH530121A (de) * 1971-04-14 1972-10-31 Patelhold Patentverwaltungs Un Hochleistungssenderanordnung
US4118677A (en) * 1974-12-05 1978-10-03 Continental Electronics Manufacturing Company Pulse width modulating circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1674705A (en) * 1928-06-26 Reactance neutralizing network
USRE27062E (en) * 1961-07-28 1971-02-16 Low pass filter for coupling continuous signal through periodically closed gate
DE1218557B (de) * 1963-02-08 1966-06-08 Telefunken Patent Modulationsschaltung zur Anodenspannungs-modulation einer Hochfrequenzsenderendstufe
FR1465124A (fr) * 1965-01-22 1967-01-06 Int Standard Electric Corp Perfectionnements aux amplificateurs haute fréquence transistorisés à rendement élevé
FR1591798A (fr) * 1966-02-10 1970-05-04

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/77 *

Also Published As

Publication number Publication date
DE2816105A1 (de) 1979-09-06
US4250469A (en) 1981-02-10
FR2418979B1 (fr) 1983-01-14
IT1119674B (it) 1986-03-10
IT7967460A0 (it) 1979-03-02
GB1551711A (en) 1979-08-30
DE2816105C2 (de) 1983-05-05

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Legal Events

Date Code Title Description
ST Notification of lapse