FR938602A - Improvements to frequency-modulated receivers - Google Patents

Improvements to frequency-modulated receivers

Info

Publication number
FR938602A
FR938602A FR938602DA FR938602A FR 938602 A FR938602 A FR 938602A FR 938602D A FR938602D A FR 938602DA FR 938602 A FR938602 A FR 938602A
Authority
FR
France
Prior art keywords
frequency
modulated receivers
receivers
modulated
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
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.)
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 FR938602A publication Critical patent/FR938602A/en
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
    • 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
    • H03D3/10—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 in which the diodes are simultaneously conducting during the same half period of the signal, e.g. radio detector
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/22—Automatic control in amplifiers having discharge tubes
    • H03G3/26—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise, e.g. squelch systems
    • H03G3/28—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise, e.g. squelch systems in frequency-modulation receivers ; in angle-modulation receivers
FR938602D 1943-04-27 1946-09-02 Improvements to frequency-modulated receivers Expired FR938602A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US484718A US2362806A (en) 1943-04-27 1943-04-27 Frequency modulation receiver

Publications (1)

Publication Number Publication Date
FR938602A true FR938602A (en) 1948-10-20

Family

ID=23925312

Family Applications (2)

Application Number Title Priority Date Filing Date
FR961086D Expired FR961086A (en) 1943-04-27
FR938602D Expired FR938602A (en) 1943-04-27 1946-09-02 Improvements to frequency-modulated receivers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR961086D Expired FR961086A (en) 1943-04-27

Country Status (5)

Country Link
US (1) US2362806A (en)
BE (3) BE479153A (en)
CA (1) CA432262A (en)
FR (2) FR938602A (en)
GB (1) GB594769A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519890A (en) * 1944-12-09 1950-08-22 Rca Corp Angle modulated wave receiver
US2501120A (en) * 1945-04-26 1950-03-21 Rca Corp Frequency modulation receiver tuning aid
US2525359A (en) * 1946-04-04 1950-10-10 Rca Corp Frequency modulation receiver tuning aid
US2620439A (en) * 1947-11-05 1952-12-02 Gen Electric Noise balancing circuits
US2612602A (en) * 1948-11-19 1952-09-30 Gen Electric Noise suppression circuit
CN107453346B (en) * 2016-05-30 2022-03-18 中国电力科学研究院 Load curve time interval division method suitable for power distribution network reconstruction

Also Published As

Publication number Publication date
BE479154A (en)
BE482547A (en)
FR961086A (en) 1950-05-03
BE479153A (en)
GB594769A (en) 1947-11-19
US2362806A (en) 1944-11-14
CA432262A (en) 1946-01-01

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