FR818511A - Systèmes de signalisation par ondes électromagnétiques ultra-courtes - Google Patents

Systèmes de signalisation par ondes électromagnétiques ultra-courtes

Info

Publication number
FR818511A
FR818511A FR818511DA FR818511A FR 818511 A FR818511 A FR 818511A FR 818511D A FR818511D A FR 818511DA FR 818511 A FR818511 A FR 818511A
Authority
FR
France
Prior art keywords
ultra
electromagnetic wave
signaling systems
short electromagnetic
wave signaling
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)
French (fr)
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR818511A publication Critical patent/FR818511A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/002—Transmission systems not characterised by the medium used for transmission characterised by the use of a carrier modulation
    • H04B14/006—Angle modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/06—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators
    • H03D3/12—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators by means of discharge tubes having more than two electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Near-Field Transmission Systems (AREA)
FR818511D 1936-01-23 1936-11-23 Systèmes de signalisation par ondes électromagnétiques ultra-courtes Expired FR818511A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60420A US2100394A (en) 1936-01-23 1936-01-23 Reception of frequency modulated waves and circuits therefor

Publications (1)

Publication Number Publication Date
FR818511A true FR818511A (fr) 1937-09-30

Family

ID=22029352

Family Applications (1)

Application Number Title Priority Date Filing Date
FR818511D Expired FR818511A (fr) 1936-01-23 1936-11-23 Systèmes de signalisation par ondes électromagnétiques ultra-courtes

Country Status (5)

Country Link
US (1) US2100394A (enrdf_load_stackoverflow)
DE (1) DE736084C (enrdf_load_stackoverflow)
FR (1) FR818511A (enrdf_load_stackoverflow)
GB (1) GB481888A (enrdf_load_stackoverflow)
NL (1) NL47076C (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE759434C (de) * 1940-09-25 1953-05-04 Lorenz A G C Frequenzabhaengiger Spannungsteiler zur Umwandlung einer frequenz-modulierten Wechsepspannung in eine amplitudenmodulierte
US2423594A (en) * 1942-07-23 1947-07-08 Liebel Flarsheim Co Resonance indicating and controlling device
US2518129A (en) * 1943-10-23 1950-08-08 Honeywell Regulator Co Control device
US2558758A (en) * 1944-01-22 1951-07-03 Sperry Corp Radio velocity indicator
US2478311A (en) * 1946-03-04 1949-08-09 Marshall C Pease Circuit for determining carrier frequencies of frequency modulated signals
US2525780A (en) * 1947-01-14 1950-10-17 Charles E Dennis Electrical frequency discriminator circuit
US2499742A (en) * 1948-06-11 1950-03-07 Bell Telephone Labor Inc Frequency modulation detector
US2747146A (en) * 1952-02-12 1956-05-22 Cook Electric Co Frequency enseitive control apparatus
JPS55162607A (en) * 1979-06-05 1980-12-18 Victor Co Of Japan Ltd Fm demodulation circuit

Also Published As

Publication number Publication date
US2100394A (en) 1937-11-30
DE736084C (de) 1943-06-07
NL47076C (enrdf_load_stackoverflow) 1939-06-15
GB481888A (en) 1938-03-18

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