GB643290A - Improvements in or relating to circuits for demodulating frequency-modulated oscillations - Google Patents

Improvements in or relating to circuits for demodulating frequency-modulated oscillations

Info

Publication number
GB643290A
GB643290A GB822/48A GB82248A GB643290A GB 643290 A GB643290 A GB 643290A GB 822/48 A GB822/48 A GB 822/48A GB 82248 A GB82248 A GB 82248A GB 643290 A GB643290 A GB 643290A
Authority
GB
United Kingdom
Prior art keywords
oscillations
time
class
grid
relating
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
GB822/48A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB643290A publication Critical patent/GB643290A/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
    • H03D3/22—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of active elements with more than two electrodes to which two signals are applied derived from the signal to be demodulated and having a phase difference related to the frequency deviation, e.g. phase detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Amplitude Modulation (AREA)
  • X-Ray Techniques (AREA)
GB822/48A 1947-01-14 1948-01-10 Improvements in or relating to circuits for demodulating frequency-modulated oscillations Expired GB643290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL266789X 1947-01-14

Publications (1)

Publication Number Publication Date
GB643290A true GB643290A (en) 1950-09-15

Family

ID=19781767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB822/48A Expired GB643290A (en) 1947-01-14 1948-01-10 Improvements in or relating to circuits for demodulating frequency-modulated oscillations

Country Status (7)

Country Link
US (1) US2531866A (xx)
BE (1) BE479537A (xx)
CH (1) CH266789A (xx)
DE (1) DE832306C (xx)
FR (1) FR959556A (xx)
GB (1) GB643290A (xx)
NL (1) NL66481C (xx)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969436C (de) * 1951-04-26 1958-06-04 Lorenz C Ag Anordnung zur Demodulation frequenz- oder phasenmodulierter Schwingungen
US2844720A (en) * 1954-12-06 1958-07-22 Radio Frequency Lab Inc Frequency shift discriminator

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2296090A (en) * 1942-09-15 Frequency modulation receiver
US2087429A (en) * 1935-06-06 1937-07-20 Rca Corp Phase and frequency modulation wave receiving system
US2239757A (en) * 1940-01-02 1941-04-29 Rca Corp Signal detecting system
US2263615A (en) * 1940-04-06 1941-11-25 Rca Corp Frequency modulation detector
US2284444A (en) * 1940-08-27 1942-05-26 Bell Telephone Labor Inc Demodulation circuit
US2273771A (en) * 1941-04-10 1942-02-17 Rca Corp Frequency modulated carrier detector
BE480687A (xx) * 1941-12-19
BE469561A (xx) * 1942-05-06

Also Published As

Publication number Publication date
DE832306C (de) 1952-02-21
BE479537A (xx)
FR959556A (xx) 1950-03-31
CH266789A (de) 1950-02-15
US2531866A (en) 1950-11-28
NL66481C (xx)

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