AU5589586A - Circuit for automatic tuning of sharpness in fm receivers - Google Patents

Circuit for automatic tuning of sharpness in fm receivers

Info

Publication number
AU5589586A
AU5589586A AU55895/86A AU5589586A AU5589586A AU 5589586 A AU5589586 A AU 5589586A AU 55895/86 A AU55895/86 A AU 55895/86A AU 5589586 A AU5589586 A AU 5589586A AU 5589586 A AU5589586 A AU 5589586A
Authority
AU
Australia
Prior art keywords
sharpness
receivers
circuit
automatic tuning
tuning
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.)
Abandoned
Application number
AU55895/86A
Inventor
Jens Hansen
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.)
HuC Elektronik Hansen and Co
Original Assignee
HuC Elektronik Hansen and Co
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 HuC Elektronik Hansen and Co filed Critical HuC Elektronik Hansen and Co
Publication of AU5589586A publication Critical patent/AU5589586A/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/08—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using varactors, i.e. voltage variable reactive diodes
    • 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
    • H03D3/005—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback wherein the demodulated signal is used for controlling a bandpass filter

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
AU55895/86A 1985-03-21 1986-03-18 Circuit for automatic tuning of sharpness in fm receivers Abandoned AU5589586A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3510559 1985-03-21
DE19853510559 DE3510559A1 (en) 1985-03-21 1985-03-21 CIRCUIT FOR AUTOMATIC TUNING FOR FM RECEIVERS

Publications (1)

Publication Number Publication Date
AU5589586A true AU5589586A (en) 1986-10-13

Family

ID=6266110

Family Applications (1)

Application Number Title Priority Date Filing Date
AU55895/86A Abandoned AU5589586A (en) 1985-03-21 1986-03-18 Circuit for automatic tuning of sharpness in fm receivers

Country Status (4)

Country Link
EP (1) EP0217839A1 (en)
AU (1) AU5589586A (en)
DE (1) DE3510559A1 (en)
WO (1) WO1986005637A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5062427A (en) * 1988-05-06 1991-11-05 Kabushiki Kaisha Toshiba Ultrasonic doppler apparatus
GB2220317B (en) * 1988-05-28 1992-07-22 Motorola Israel Ltd Automatically self-calibrating oscillators in heterodyned radio receivers
US4959872A (en) * 1988-06-23 1990-09-25 Kabushiki Kaisha Toshiba Automatic frequency control apparatus for FM receivers
DE3834118A1 (en) * 1988-10-07 1990-04-12 Philips Patentverwaltung CIRCUIT ARRANGEMENT FOR DEMODULATING A FREQUENCY-MODULATED SIGNAL
ATE421795T1 (en) * 2002-02-18 2009-02-15 Freescale Semiconductor Inc DEVICE AND METHOD FOR TUNING A FILTER

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL248231A (en) * 1959-02-18
DE2115683C3 (en) * 1971-03-31 1974-01-03 Siemens Ag, 1000 Berlin U. 8000 Muenchen Oscillator circuitry
DE2233724C3 (en) * 1972-07-08 1975-11-27 Loewe Opta Gmbh, 1000 Berlin Circuit arrangement for setting the frequency in voltage-dependent oscillators
JPS51142201A (en) * 1975-06-02 1976-12-07 Onkyo Corp Automatic frequency control circuit
DE3048263A1 (en) * 1980-12-20 1982-07-29 Blaupunkt-Werke Gmbh, 3200 Hildesheim BROADCAST RECEIVER
JPS5992617A (en) * 1982-11-19 1984-05-28 Hitachi Ltd Electronic tuning receiver
DE3317158A1 (en) * 1983-05-11 1984-11-15 Robert Bosch Gmbh, 7000 Stuttgart Radio-frequency receiving circuit

Also Published As

Publication number Publication date
EP0217839A1 (en) 1987-04-15
WO1986005637A1 (en) 1986-09-25
DE3510559A1 (en) 1986-09-25

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