GB672188A - Improvements in and relating to modulation systems - Google Patents

Improvements in and relating to modulation systems

Info

Publication number
GB672188A
GB672188A GB21959/50A GB2195950A GB672188A GB 672188 A GB672188 A GB 672188A GB 21959/50 A GB21959/50 A GB 21959/50A GB 2195950 A GB2195950 A GB 2195950A GB 672188 A GB672188 A GB 672188A
Authority
GB
United Kingdom
Prior art keywords
phase
fed
valve
waves
pair
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
GB21959/50A
Other languages
English (en)
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB672188A publication Critical patent/GB672188A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/24—Angle modulation by means of variable impedance by means of a variable resistive element, e.g. tube
    • H03C3/26—Angle modulation by means of variable impedance by means of a variable resistive element, e.g. tube comprising two elements controlled in push-pull by modulating signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/50—Amplitude modulation by converting angle modulation to amplitude modulation
    • 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)
  • Amplitude Modulation (AREA)
GB21959/50A 1949-09-23 1950-09-06 Improvements in and relating to modulation systems Expired GB672188A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US117360A US2614246A (en) 1949-09-23 1949-09-23 Modulation system

Publications (1)

Publication Number Publication Date
GB672188A true GB672188A (en) 1952-05-14

Family

ID=22372475

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21959/50A Expired GB672188A (en) 1949-09-23 1950-09-06 Improvements in and relating to modulation systems

Country Status (7)

Country Link
US (1) US2614246A (forum.php)
BE (1) BE498272A (forum.php)
CH (1) CH291953A (forum.php)
DE (1) DE836049C (forum.php)
FR (1) FR1083406A (forum.php)
GB (1) GB672188A (forum.php)
NL (2) NL85234C (forum.php)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3119899A (en) * 1950-06-22 1964-01-28 Rca Corp Multiplex systems
US2903652A (en) * 1952-03-11 1959-09-08 Itt Ultra-high frequency amplitude modulator
US2772398A (en) * 1953-09-17 1956-11-27 Hoffman Electronics Corp Simplified circuits for producing amplitude modulation
US2901599A (en) * 1954-07-16 1959-08-25 Rca Corp Amplitude-modulated radio transmitter combining two constant amplitude phase modulated signals
US2924791A (en) * 1957-02-25 1960-02-09 Rca Corp Modulation system for transmitters
DE1125973B (de) * 1959-02-25 1962-03-22 Sennheiser Electronic Schaltungsanordnung fuer einen elektromechanischen Relaiswandler in Hochfrequenzschaltung, z.B. Kondensatormikrofon
US3170127A (en) * 1961-04-21 1965-02-16 Philco Corp Amplitude modulation system
USB351737I5 (forum.php) * 1966-05-02
US3777275A (en) * 1972-01-31 1973-12-04 Bell Telephone Labor Inc Linear amplification with nonlinear devices
US4090147A (en) * 1977-07-20 1978-05-16 Bell Telephone Laboratories, Incorporated Interferometric amplifier
US4259744A (en) * 1979-08-27 1981-03-31 The United States Of America As Represented By The Secretary Of The Navy Signal generator
US4835493A (en) * 1987-10-19 1989-05-30 Hughes Aircraft Company Very wide bandwidth linear amplitude modulation of RF signal by vector summation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1673002A (en) * 1923-02-23 1928-06-12 Western Electric Co Control of electric waves
GB472214A (en) * 1936-09-17 1937-09-20 Marconi Wireless Telegraph Co Improvements in or relating to modulated carrier wave systems

Also Published As

Publication number Publication date
DE836049C (de) 1952-04-07
NL85234C (forum.php)
FR1083406A (fr) 1955-01-10
US2614246A (en) 1952-10-14
NL156183B (nl)
BE498272A (forum.php)
CH291953A (de) 1953-07-15

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