FR875149A - Frequency demodulator - Google Patents

Frequency demodulator

Info

Publication number
FR875149A
FR875149A FR875149DA FR875149A FR 875149 A FR875149 A FR 875149A FR 875149D A FR875149D A FR 875149DA FR 875149 A FR875149 A FR 875149A
Authority
FR
France
Prior art keywords
frequency demodulator
demodulator
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
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.)
BAE Systems Aerospace Inc
Original Assignee
Hazeltine 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 Hazeltine Corp filed Critical Hazeltine Corp
Application granted granted Critical
Publication of FR875149A publication Critical patent/FR875149A/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
FR875149D 1940-08-12 1941-08-25 Frequency demodulator Expired FR875149A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US552807XA 1940-08-12 1940-08-12

Publications (1)

Publication Number Publication Date
FR875149A true FR875149A (en) 1942-09-07

Family

ID=21996865

Family Applications (1)

Application Number Title Priority Date Filing Date
FR875149D Expired FR875149A (en) 1940-08-12 1941-08-25 Frequency demodulator

Country Status (2)

Country Link
FR (1) FR875149A (en)
GB (1) GB552807A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL70931C (en) * 1945-06-14
US2496818A (en) * 1945-09-07 1950-02-07 Rca Corp Angle modulation detector
DE977658C (en) * 1945-09-07 1968-01-25 Rca Corp Detector for phase angle modulated carrier frequency voltages
US2620439A (en) * 1947-11-05 1952-12-02 Gen Electric Noise balancing circuits
USRE25699E (en) * 1954-04-26 1964-12-15 Simplified two-channel multiplex system

Also Published As

Publication number Publication date
GB552807A (en) 1943-04-27

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