FR919752A - Device for reducing the width of the frequency band in heterodyne reception of frequency-modulated oscillations - Google Patents

Device for reducing the width of the frequency band in heterodyne reception of frequency-modulated oscillations

Info

Publication number
FR919752A
FR919752A FR919752DA FR919752A FR 919752 A FR919752 A FR 919752A FR 919752D A FR919752D A FR 919752DA FR 919752 A FR919752 A FR 919752A
Authority
FR
France
Prior art keywords
frequency
reducing
width
frequency band
modulated oscillations
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.)
Patelhold Patenverwertungs and Elektro-Holding AG
Original Assignee
Patelhold Patenverwertungs and Elektro-Holding AG
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 Patelhold Patenverwertungs and Elektro-Holding AG filed Critical Patelhold Patenverwertungs and Elektro-Holding AG
Application granted granted Critical
Publication of FR919752A publication Critical patent/FR919752A/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
    • H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
    • H03D3/003—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback
    • H03D3/004—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback wherein the demodulated signal is used for controlling an oscillator, e.g. the local oscillator

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Superheterodyne Receivers (AREA)
FR919752D 1945-01-27 1946-01-07 Device for reducing the width of the frequency band in heterodyne reception of frequency-modulated oscillations Expired FR919752A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH620668X 1945-01-27

Publications (1)

Publication Number Publication Date
FR919752A true FR919752A (en) 1947-03-18

Family

ID=4524065

Family Applications (1)

Application Number Title Priority Date Filing Date
FR919752D Expired FR919752A (en) 1945-01-27 1946-01-07 Device for reducing the width of the frequency band in heterodyne reception of frequency-modulated oscillations

Country Status (4)

Country Link
BE (1) BE462652A (en)
CH (1) CH248353A (en)
FR (1) FR919752A (en)
GB (1) GB620668A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093429B (en) * 1956-07-07 1960-11-24 Koerting Radio Werke G M B H Demodulation circuit
GB856892A (en) * 1957-11-14 1960-12-21 Collins Radio Co Means for reducing the threshold of angular-modulation receivers
DE1280989B (en) * 1966-11-09 1968-10-24 Telefunken Patent Method for frequency negative feedback in FM receivers in communications technology, in particular radio relay systems, to improve the FM threshold
GB8330761D0 (en) * 1983-11-18 1983-12-29 Plessey Co Plc Frequency modulation detectors
EP0143556B2 (en) * 1983-11-18 1996-03-06 Plessey Overseas Limited Improvements relating to frequency modulation detectors

Also Published As

Publication number Publication date
GB620668A (en) 1949-03-29
BE462652A (en)
CH248353A (en) 1947-04-30

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