FR869542A - Perfectionnement aux dispositifs changeurs de fréquence - Google Patents

Perfectionnement aux dispositifs changeurs de fréquence

Info

Publication number
FR869542A
FR869542A FR869542DA FR869542A FR 869542 A FR869542 A FR 869542A FR 869542D A FR869542D A FR 869542DA FR 869542 A FR869542 A FR 869542A
Authority
FR
France
Prior art keywords
further training
frequency changing
changing devices
devices
frequency
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
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR869542A publication Critical patent/FR869542A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B21/00—Generation of oscillations by combining unmodulated signals of different frequencies
    • H03B21/01—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies
    • H03B21/02—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies by plural beating, i.e. for frequency synthesis ; Beating in combination with multiplication or division of frequency
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
FR869542D 1940-01-27 1941-01-28 Perfectionnement aux dispositifs changeurs de fréquence Expired FR869542A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US315998A US2228815A (en) 1940-01-27 1940-01-27 Frequency conversion system

Publications (1)

Publication Number Publication Date
FR869542A true FR869542A (fr) 1942-02-04

Family

ID=23227015

Family Applications (1)

Application Number Title Priority Date Filing Date
FR869542D Expired FR869542A (fr) 1940-01-27 1941-01-28 Perfectionnement aux dispositifs changeurs de fréquence

Country Status (4)

Country Link
US (1) US2228815A (fr)
CA (1) CA411423A (fr)
CH (1) CH232472A (fr)
FR (1) FR869542A (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502294A (en) * 1943-08-19 1950-03-28 Wallace Marcel Double sweep panoramic radio receiver
GB579567A (en) * 1943-10-07 1946-08-08 Marconi Wireless Telegraph Co Improvements in frequency controlling and stabilising means in radio-apparatus and the like
US2643329A (en) * 1945-05-14 1953-06-23 Standard Telephones Cables Ltd Tracking system between receiver and transmitter
US2501591A (en) * 1945-08-27 1950-03-21 Premier Crystal Lab Inc Multiband superheterodyne radio receiver having a push-button station selector
US2656459A (en) * 1945-10-30 1953-10-20 John H Tinlot Wide frequency coverage beacon receiver
US2555391A (en) * 1946-03-04 1951-06-05 Arthur A Glass Radio oscillator control
US2451430A (en) * 1946-04-23 1948-10-12 Jefferson Standard Broadcastin Carrier frequency shift signaling
US2666141A (en) * 1946-05-08 1954-01-12 James K Clapp Single side band mixer for moving target indicating radar systems
US2509963A (en) * 1947-01-30 1950-05-30 Collins Radio Co Radio receiving and frequency conversion system
US2647992A (en) * 1948-12-03 1953-08-04 Gen Electric Frequency stabilized radio receiving system
US2633492A (en) * 1948-12-30 1953-03-31 Bell Telephone Labor Inc Guided wave frequency range, frequency selective and equalizing structure
US2710343A (en) * 1950-08-09 1955-06-07 Dale Belford Secrecy system for transmitting television signals
US2691065A (en) * 1951-01-12 1954-10-05 Rca Corp Multiplex relay system
US2800580A (en) * 1952-04-21 1957-07-23 Philco Corp Delay system
DE1276144B (de) * 1962-09-19 1968-08-29 Siemens Ag Richtfunksystem mit Winkelmodulation
US4991144A (en) * 1963-03-29 1991-02-05 The United States Of America As Represented By The Secretary Of The Navy Dopplerized echo repeater
US3921123A (en) * 1967-02-02 1975-11-18 Us Navy Torpedo target simulator
US3733438A (en) * 1971-03-01 1973-05-15 Bell Telephone Labor Inc Carrier supply for frequency division multiplexed systems
USRE31295E (en) * 1971-03-01 1983-06-28 Bell Telephone Laboratories, Incorporated Carrier supply for frequency division multiplexed systems
US4083004A (en) * 1976-06-08 1978-04-04 Westinghouse Electric Corporation Expendable repeater employing harmonic mixing
JPS58176459U (ja) * 1982-05-19 1983-11-25 アルプス電気株式会社 局部発振器用増幅器

Also Published As

Publication number Publication date
US2228815A (en) 1941-01-14
CA411423A (fr) 1943-03-30
CH232472A (de) 1944-05-31

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