DE940174C - Frequenzdemodulator - Google Patents

Frequenzdemodulator

Info

Publication number
DE940174C
DE940174C DEN9610A DEN0009610A DE940174C DE 940174 C DE940174 C DE 940174C DE N9610 A DEN9610 A DE N9610A DE N0009610 A DEN0009610 A DE N0009610A DE 940174 C DE940174 C DE 940174C
Authority
DE
Germany
Prior art keywords
rectifiers
limiter
mentioned
frequency
voltage
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
DEN9610A
Other languages
German (de)
English (en)
Inventor
Peter Johannes Hubertu Janssen
Wouter Smeulers
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
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 filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of DE940174C publication Critical patent/DE940174C/de
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Plasma Technology (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Amplifiers (AREA)
  • Filters And Equalizers (AREA)
DEN9610A 1953-10-21 1954-10-19 Frequenzdemodulator Expired DE940174C (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL322503X 1953-10-21
NL193145 1954-12-11

Publications (1)

Publication Number Publication Date
DE940174C true DE940174C (de) 1956-03-15

Family

ID=26641590

Family Applications (2)

Application Number Title Priority Date Filing Date
DEN9610A Expired DE940174C (de) 1953-10-21 1954-10-19 Frequenzdemodulator
DEN11553A Pending DE1007387B (de) 1953-10-21 1955-12-07 Frequenzdemodulator

Family Applications After (1)

Application Number Title Priority Date Filing Date
DEN11553A Pending DE1007387B (de) 1953-10-21 1955-12-07 Frequenzdemodulator

Country Status (7)

Country Link
US (2) US2904675A (forum.php)
BE (2) BE532653A (forum.php)
CH (2) CH322503A (forum.php)
DE (2) DE940174C (forum.php)
FR (2) FR1110195A (forum.php)
GB (2) GB758802A (forum.php)
NL (2) NL99524C (forum.php)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2943263A (en) * 1957-08-20 1960-06-28 Hazeltine Research Inc Phase detector
US3063019A (en) * 1958-10-06 1962-11-06 Tno Circuit for the demodulation of frequency modulated signals
DE1090277B (de) * 1958-12-08 1960-10-06 Telefunken Gmbh Schaltungsanordnung zur Begrenzung der Spannungsamplitude von Hochfrequenzschwingungen an einem Schwingungskreis
US3256489A (en) * 1963-01-11 1966-06-14 Rca Corp Amplitude dependent zero shift reduction for frequency discriminators
DE1302309B (forum.php) * 1964-08-20 1970-10-15
GB1126030A (en) * 1966-10-07 1968-09-05 Telefunken Patent Improvements in or relating to frequency demodulators
US3621409A (en) * 1969-10-27 1971-11-16 Matsushita Electric Industrial Co Ltd Frequency discriminator circuit having a narrow detection band

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL79628B (forum.php) * 1935-10-17
US2251382A (en) * 1940-06-04 1941-08-05 Rca Corp Frequency modulated wave receiver
US2285957A (en) * 1941-03-29 1942-06-09 Hazeltine Corp Balanced frequency detector
US2353468A (en) * 1942-05-22 1944-07-11 Rca Corp Frequency modulation receiver circuit
BE477489A (forum.php) * 1942-06-29
US2420248A (en) * 1944-07-19 1947-05-06 Rca Corp Amplitude limiter circuit
US2477391A (en) * 1944-11-24 1949-07-26 Avco Mfg Corp Radio receiving system
US2478023A (en) * 1946-03-22 1949-08-02 Gen Electric Frequency monitoring system
US2539637A (en) * 1946-04-30 1951-01-30 Rca Corp Frequency modulation receiver
US2524556A (en) * 1946-09-20 1950-10-03 Gen Electric Amplitude limiter
US2561059A (en) * 1947-02-27 1951-07-17 Rca Corp Signal amplitude controlling transformer loading circuit
DE809672C (de) * 1948-12-02 1951-08-02 Philips Nv Schaltung zur Demodulation einer frequenzmodulierten Schwingung
FR1020433A (fr) * 1950-06-16 1953-02-06 Thomson Houston Comp Francaise Perfectionnement aux circuits détecteurs d'ondes modulées en fréquence

Also Published As

Publication number Publication date
BE543501A (forum.php)
CH337242A (de) 1959-03-31
NL102009C (forum.php)
GB795561A (en) 1958-05-28
CH322503A (de) 1957-06-15
GB758802A (en) 1956-10-10
US2904675A (en) 1959-09-15
BE532653A (forum.php)
US2873365A (en) 1959-02-10
DE1007387B (de) 1957-05-02
FR1110195A (fr) 1956-02-07
NL99524C (forum.php)
FR68385E (fr) 1958-04-29

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