GB1106913A - Improvements in or relating to frequency modulated receivers - Google Patents

Improvements in or relating to frequency modulated receivers

Info

Publication number
GB1106913A
GB1106913A GB145366A GB145366A GB1106913A GB 1106913 A GB1106913 A GB 1106913A GB 145366 A GB145366 A GB 145366A GB 145366 A GB145366 A GB 145366A GB 1106913 A GB1106913 A GB 1106913A
Authority
GB
United Kingdom
Prior art keywords
frequency
signals
output
relating
receivers
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
GB145366A
Inventor
Frank Colston Bennett
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 Electronics Ltd
Original Assignee
Marconi Co Ltd
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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB145366A priority Critical patent/GB1106913A/en
Publication of GB1106913A publication Critical patent/GB1106913A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/16—Frequency regulation arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Superheterodyne Receivers (AREA)
  • Television Receiver Circuits (AREA)

Abstract

1,106,913. Automatic frequency control systems. MARCOM CO. Ltd. 16 Nov., 1966 [12 Jan., 1966], No. 1453/66. Heading H3A. A receiver for receiving pulsed frequencymodulated signals, e.g. for frequency shift communication, comprises a discriminator 6 the output of which is fed directly or through a filter 7 to a peak detector 9 which produces signals proportional to the peak frequency deviation in either direction; these signals are fed to a difference amplifying control signal unit 10 the output of which controls the frequency of the local oscillator 4. This system produces the correct intermediate frequency even if signals of one kind (e.g. marks or spaces) predominate in the input, and is also applicable to receivers for frequency-modulated television systems.
GB145366A 1966-01-12 1966-01-12 Improvements in or relating to frequency modulated receivers Expired GB1106913A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB145366A GB1106913A (en) 1966-01-12 1966-01-12 Improvements in or relating to frequency modulated receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB145366A GB1106913A (en) 1966-01-12 1966-01-12 Improvements in or relating to frequency modulated receivers

Publications (1)

Publication Number Publication Date
GB1106913A true GB1106913A (en) 1968-03-20

Family

ID=9722258

Family Applications (1)

Application Number Title Priority Date Filing Date
GB145366A Expired GB1106913A (en) 1966-01-12 1966-01-12 Improvements in or relating to frequency modulated receivers

Country Status (1)

Country Link
GB (1) GB1106913A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160339A2 (en) * 1984-04-30 1985-11-06 Philips Electronics Uk Limited Improvements in or relating to direct modulation FM data receivers
EP0161024A1 (en) * 1984-04-27 1985-11-13 Koninklijke Philips Electronics N.V. An FSK data receiver
GB2245442A (en) * 1990-06-20 1992-01-02 Mitsubishi Electric Corp Frequency error detecting apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161024A1 (en) * 1984-04-27 1985-11-13 Koninklijke Philips Electronics N.V. An FSK data receiver
EP0160339A2 (en) * 1984-04-30 1985-11-06 Philips Electronics Uk Limited Improvements in or relating to direct modulation FM data receivers
EP0160339A3 (en) * 1984-04-30 1988-01-07 Philips Electronic And Associated Industries Limited Improvements in or relating to direct modulation fm data receivers
GB2245442A (en) * 1990-06-20 1992-01-02 Mitsubishi Electric Corp Frequency error detecting apparatus
GB2245442B (en) * 1990-06-20 1994-06-01 Mitsubishi Electric Corp Frequency error detecting apparatus

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