GB620668A - An improved arrangement for reducing the frequency band in the heterodyne reception of frequency-modulated oscillations - Google Patents

An improved arrangement for reducing the frequency band in the heterodyne reception of frequency-modulated oscillations

Info

Publication number
GB620668A
GB620668A GB2566/46A GB256646A GB620668A GB 620668 A GB620668 A GB 620668A GB 2566/46 A GB2566/46 A GB 2566/46A GB 256646 A GB256646 A GB 256646A GB 620668 A GB620668 A GB 620668A
Authority
GB
United Kingdom
Prior art keywords
frequency
output
mixer
multiplier
limiter
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
GB2566/46A
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.)
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
Publication of GB620668A publication Critical patent/GB620668A/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)
  • Superheterodyne Receivers (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
GB2566/46A 1945-01-27 1946-01-25 An improved arrangement for reducing the frequency band in the heterodyne reception of frequency-modulated oscillations Expired GB620668A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB620668A true GB620668A (en) 1949-03-29

Family

ID=4524065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2566/46A Expired GB620668A (en) 1945-01-27 1946-01-25 An improved arrangement for reducing the frequency band in the heterodyne reception of frequency-modulated oscillations

Country Status (4)

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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093429B (de) * 1956-07-07 1960-11-24 Koerting Radio Werke G M B H Demodulationsschaltung
DE1176214B (de) * 1957-11-14 1964-08-20 Collins Radio Company Cedar Ra Empfaenger fuer frequenz- oder phasen-modulierte elektrische Schwingungen mit automatischer Bandbreitenregelung
DE1280989B (de) * 1966-11-09 1968-10-24 Telefunken Patent Verfahren zur Frequenzgegenkopplung in FM-Empfaengern der Nachrichtentechnik, insbesondere Richtfunkanlagen, zur Verbesserung der FM-Schwelle
GB2149987A (en) * 1983-11-18 1985-06-19 Plessey Co Plc Frequency modulation detectors
US4608539A (en) * 1983-11-18 1986-08-26 Plessey Overseas Limited FM detector with injection locked divider input circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093429B (de) * 1956-07-07 1960-11-24 Koerting Radio Werke G M B H Demodulationsschaltung
DE1176214B (de) * 1957-11-14 1964-08-20 Collins Radio Company Cedar Ra Empfaenger fuer frequenz- oder phasen-modulierte elektrische Schwingungen mit automatischer Bandbreitenregelung
DE1280989B (de) * 1966-11-09 1968-10-24 Telefunken Patent Verfahren zur Frequenzgegenkopplung in FM-Empfaengern der Nachrichtentechnik, insbesondere Richtfunkanlagen, zur Verbesserung der FM-Schwelle
GB2149987A (en) * 1983-11-18 1985-06-19 Plessey Co Plc Frequency modulation detectors
US4608539A (en) * 1983-11-18 1986-08-26 Plessey Overseas Limited FM detector with injection locked divider input circuit

Also Published As

Publication number Publication date
BE462652A (enrdf_load_html_response)
CH248353A (de) 1947-04-30
FR919752A (fr) 1947-03-18

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