GB1427944A - Radio frequency transmitters - Google Patents

Radio frequency transmitters

Info

Publication number
GB1427944A
GB1427944A GB3885973A GB3885973A GB1427944A GB 1427944 A GB1427944 A GB 1427944A GB 3885973 A GB3885973 A GB 3885973A GB 3885973 A GB3885973 A GB 3885973A GB 1427944 A GB1427944 A GB 1427944A
Authority
GB
United Kingdom
Prior art keywords
modulator
amplifier
power
modulation
aug
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
Application number
GB3885973A
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.)
TS RAZVOYNA LAB
Original Assignee
TS RAZVOYNA LAB
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 TS RAZVOYNA LAB filed Critical TS RAZVOYNA LAB
Publication of GB1427944A publication Critical patent/GB1427944A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/04—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers
    • H03F1/06—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers to raise the efficiency of amplifying modulated radio frequency waves; to raise the efficiency of amplifiers acting also as modulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)

Abstract

1427944 Amplitude modulation TSENTRALNA RAZVOYNA LABORATORIA 16 Aug 1973 [25 Aug 1972] 38859/73 Heading H3R A transmitter comprises an amplitude modulator stage followed by an amplifier, the power supply to the amplifier being varied in dependence on the mean modulation power. The modulation signal is fed to the modulator, e.g. a grid or base modulator circuit and also to a mean level detector which provides a control signal for a controlled rectifier which supplies power to a power amplifier stage connected between the modulator and the aerial.
GB3885973A 1972-08-25 1973-08-16 Radio frequency transmitters Expired GB1427944A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG20500A BG17928A1 (en) 1972-08-25 1972-08-25

Publications (1)

Publication Number Publication Date
GB1427944A true GB1427944A (en) 1976-03-10

Family

ID=3898572

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3885973A Expired GB1427944A (en) 1972-08-25 1973-08-16 Radio frequency transmitters

Country Status (6)

Country Link
BG (1) BG17928A1 (en)
CH (1) CH556114A (en)
DE (1) DE2342714A1 (en)
FR (1) FR2197267B1 (en)
GB (1) GB1427944A (en)
IT (1) IT990307B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2317807A1 (en) * 1975-07-09 1977-02-04 Ts Rasvoyna Lab Radio transmitter withAM grid modulation - has preamplifier synchronised with modulation signal to raise efficiency of transmission
CH664655A5 (en) * 1980-12-12 1988-03-15 Patelhold Patentverwertung METHOD AND AMPLIFIER CIRCUIT FOR THE AMPLIFICATION OF ELECTRICAL SIGNALS, IN PARTICULAR LF MODULATION SIGNALS OF A BROADCASTING TRANSMITTER.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486128A (en) * 1968-02-07 1969-12-23 Us Army Power amplifier for amplitude modulated transmitter
FR2109336A5 (en) * 1970-10-13 1972-05-26 Thomson Csf

Also Published As

Publication number Publication date
CH556114A (en) 1974-11-15
DE2342714A1 (en) 1974-04-04
FR2197267B1 (en) 1976-10-01
FR2197267A1 (en) 1974-03-22
IT990307B (en) 1975-06-20
BG17928A1 (en) 1974-03-05

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee