FR1166982A - Dispositifs de détection de signaux modulés en fréquence tels que discriminateursde fréquence - Google Patents

Dispositifs de détection de signaux modulés en fréquence tels que discriminateursde fréquence

Info

Publication number
FR1166982A
FR1166982A FR1166982DA FR1166982A FR 1166982 A FR1166982 A FR 1166982A FR 1166982D A FR1166982D A FR 1166982DA FR 1166982 A FR1166982 A FR 1166982A
Authority
FR
France
Prior art keywords
frequency
modulated signal
signal detection
detection devices
discriminators
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)
Inventor
James Polyzou
John Holt Brundage
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR1166982A publication Critical patent/FR1166982A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03D3/08—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 diodes, e.g. Foster-Seeley discriminator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
    • H04L27/148—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using filters, including PLL-type filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
FR1166982D 1956-02-23 1957-02-22 Dispositifs de détection de signaux modulés en fréquence tels que discriminateursde fréquence Expired FR1166982A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US567112A US2906873A (en) 1956-02-23 1956-02-23 Discriminator circuit

Publications (1)

Publication Number Publication Date
FR1166982A true FR1166982A (fr) 1958-11-18

Family

ID=24265765

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1166982D Expired FR1166982A (fr) 1956-02-23 1957-02-22 Dispositifs de détection de signaux modulés en fréquence tels que discriminateursde fréquence

Country Status (4)

Country Link
US (1) US2906873A (fr)
BE (1) BE555221A (fr)
FR (1) FR1166982A (fr)
GB (1) GB808164A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969468A (en) * 1957-02-21 1961-01-24 Collins Radio Co Frequency and phase discriminator
US3667062A (en) * 1971-03-30 1972-05-30 Gary O White Active linear discriminator circuit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE721138C (de) * 1937-08-14 1942-05-28 Aeg Anordnung zur Frequenzmessung bzw. frequenzabhaengigen Regelung fuer niederfrequenten Wechselstrom mittels eines gedaempften Schwingungskreises
US2243417A (en) * 1939-06-01 1941-05-27 Rca Corp Frequency modulation receiver
US2374735A (en) * 1943-03-31 1945-05-01 Rca Corp Combined discriminator and carrier filter circuits
BE481486A (fr) * 1947-03-27
US2712600A (en) * 1950-12-18 1955-07-05 Gen Electric Frequency response circuits
US2743361A (en) * 1952-01-23 1956-04-24 Motorola Inc Selective squelch receiver

Also Published As

Publication number Publication date
GB808164A (en) 1959-01-28
US2906873A (en) 1959-09-29
BE555221A (fr)

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