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GB1163330A - Receiver for Frequency-Modulated Signals - Google Patents

Receiver for Frequency-Modulated Signals

Info

Publication number
GB1163330A
GB1163330A GB5835766A GB5835766A GB1163330A GB 1163330 A GB1163330 A GB 1163330A GB 5835766 A GB5835766 A GB 5835766A GB 5835766 A GB5835766 A GB 5835766A GB 1163330 A GB1163330 A GB 1163330A
Authority
GB
United Kingdom
Prior art keywords
frequency
receiver
dec
amplifier
local oscillator
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
GB5835766A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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
Priority claimed from DE1966ST025313 external-priority patent/DE1278559B/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1163330A publication Critical patent/GB1163330A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • 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
    • 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
    • H03D3/04—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by counting or integrating cycles of oscillations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H04B1/28—Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Noise Elimination (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

1,163,330. Frequency modulation receivers. INTERNATIONAL STANDARD ELECTRIC CORP. 30 Dec., 1966 [31 Dec., 1965], No. 58357/66. Heading H3R. In a superheterodyne receiver for frequencymodulated signals having a predetermined maximum frequency shift, the I.F. amplifier is tuned exclusively by RC filters and operates at a frequency less than five times the maximum frequency shift, suppression of image frequencies being obtained by limitation in the I.F. amplifier. The demodulator is preferably a monostable circuit feeding an integrating capacitor, and the demodulated signal may be fed back to control the local oscillator frequency thereby providing negative feedback and automatic frequency control. Switch means may be provided for altering the sign of the feedback so that the local oscillator can be stabilized at will on either side of the input frequency. The receiver may be constructed as an integrated circuit.
GB5835766A 1965-12-31 1966-12-30 Receiver for Frequency-Modulated Signals Expired GB1163330A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1965ST024827 DE1263113B (en) 1965-12-31 1965-12-31 Receiver for frequency-modulated signals
DE1966ST025313 DE1278559B (en) 1966-04-30 1966-04-30 Receiver for frequency-modulated signals
DE1966ST025316 DE1278561B (en) 1965-12-31 1966-04-30 Receiver for frequency-modulated signals

Publications (1)

Publication Number Publication Date
GB1163330A true GB1163330A (en) 1969-09-04

Family

ID=27212514

Family Applications (3)

Application Number Title Priority Date Filing Date
GB5835766A Expired GB1163330A (en) 1965-12-31 1966-12-30 Receiver for Frequency-Modulated Signals
GB1977667A Expired GB1174503A (en) 1965-12-31 1967-04-28 Receiver for F.M. Signals.
GB1977967A Expired GB1168904A (en) 1965-12-31 1967-04-28 Receiver for F.M. Signals

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB1977667A Expired GB1174503A (en) 1965-12-31 1967-04-28 Receiver for F.M. Signals.
GB1977967A Expired GB1168904A (en) 1965-12-31 1967-04-28 Receiver for F.M. Signals

Country Status (5)

Country Link
DE (2) DE1263113B (en)
FR (1) FR1513456A (en)
GB (3) GB1163330A (en)
NL (1) NL154078B (en)
NO (1) NO125422B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073620A3 (en) * 1981-08-31 1984-08-15 Rca Corporation Fm counter detector
EP0255553A1 (en) * 1986-08-07 1988-02-10 Deutsche ITT Industries GmbH Method for receiving frequency-modulated stereo-multiplex signals

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073620A3 (en) * 1981-08-31 1984-08-15 Rca Corporation Fm counter detector
EP0255553A1 (en) * 1986-08-07 1988-02-10 Deutsche ITT Industries GmbH Method for receiving frequency-modulated stereo-multiplex signals
US4817167A (en) * 1986-08-07 1989-03-28 Deutsche Itt Industries Gmbh Method of receiving frequency-modulated stereo multiplex signals

Also Published As

Publication number Publication date
DE1263113B (en) 1968-03-14
FR1513456A (en) 1968-02-16
DE1278561B (en) 1968-09-26
GB1174503A (en) 1969-12-17
NO125422B (en) 1972-09-04
NL154078B (en) 1977-07-15
NL6618397A (en) 1967-07-03
GB1168904A (en) 1969-10-29

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee