IT1165325B - Disposizione di comando per ottenere un sincronismo fra la frequenza dell'oscillatore e la frequenza di risonanza del circuito di entrata di un ricevitore ad eterodina - Google Patents

Disposizione di comando per ottenere un sincronismo fra la frequenza dell'oscillatore e la frequenza di risonanza del circuito di entrata di un ricevitore ad eterodina

Info

Publication number
IT1165325B
IT1165325B IT26513/79A IT2651379A IT1165325B IT 1165325 B IT1165325 B IT 1165325B IT 26513/79 A IT26513/79 A IT 26513/79A IT 2651379 A IT2651379 A IT 2651379A IT 1165325 B IT1165325 B IT 1165325B
Authority
IT
Italy
Prior art keywords
frequency
heterodine
synchronism
oscillator
receiver
Prior art date
Application number
IT26513/79A
Other languages
English (en)
Other versions
IT7926513A0 (it
Inventor
Christoph W Malinowski
Heinz Rinderle
Original Assignee
Licentia Gmbh
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 DE19782845005 external-priority patent/DE2845005A1/de
Priority claimed from DE19782844938 external-priority patent/DE2844938C2/de
Priority claimed from DE2856397A external-priority patent/DE2856397C2/de
Application filed by Licentia Gmbh filed Critical Licentia Gmbh
Publication of IT7926513A0 publication Critical patent/IT7926513A0/it
Application granted granted Critical
Publication of IT1165325B publication Critical patent/IT1165325B/it

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
    • H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
    • H03J5/0281—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer the digital values being held in an auxiliary non erasable memory
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/005—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing phase or frequency of 2 mutually independent oscillations in demodulators)
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/06—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/28—Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range
IT26513/79A 1978-10-16 1979-10-15 Disposizione di comando per ottenere un sincronismo fra la frequenza dell'oscillatore e la frequenza di risonanza del circuito di entrata di un ricevitore ad eterodina IT1165325B (it)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19782845005 DE2845005A1 (de) 1978-10-16 1978-10-16 Schaltungsanordnung zur erzielung eines frequenzabhaengigen signals
DE19782844938 DE2844938C2 (de) 1978-10-16 1978-10-16 Schaltungsanordnung zur Erzielung eines Gleichlaufs zwischen der Oszillatorfrequenz und der Resonanzfrequenz des Eingangskreises eines Überlagerungsempfängers
DE2856397A DE2856397C2 (de) 1978-12-28 1978-12-28 Schaltungsanordnung zur Erzielung eines Gleichlaufs zwischen der Oszillatorfrequenz und der Resonanzfrequenz des Eingangskreises eines Überlagerungsempfängers.

Publications (2)

Publication Number Publication Date
IT7926513A0 IT7926513A0 (it) 1979-10-15
IT1165325B true IT1165325B (it) 1987-04-22

Family

ID=27187711

Family Applications (1)

Application Number Title Priority Date Filing Date
IT26513/79A IT1165325B (it) 1978-10-16 1979-10-15 Disposizione di comando per ottenere un sincronismo fra la frequenza dell'oscillatore e la frequenza di risonanza del circuito di entrata di un ricevitore ad eterodina

Country Status (3)

Country Link
FR (1) FR2439507B1 (it)
GB (1) GB2037512B (it)
IT (1) IT1165325B (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3066690B2 (ja) * 1993-09-20 2000-07-17 富士通株式会社 位相同期発振回路

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617899A (en) * 1969-01-15 1971-11-02 Motorola Inc Tuning control for multiple electronically tuned circuits
US3657654A (en) * 1969-09-11 1972-04-18 Gen Instrument Corp Communications receiver employing varactor controlled tuning stages
US3701949A (en) * 1971-03-22 1972-10-31 Cutler Hammer Inc Wideband frequency scanning radio receiver
US3758865A (en) * 1972-01-18 1973-09-11 Gen Motors Corp Bias voltage generator for the voltage-responsive tuning elements in an electronically tuned radio receiver
FR2175671B1 (it) * 1972-03-17 1977-04-01 Trt Telecom Radio Electr
JPS5185303A (it) * 1975-01-23 1976-07-26 Tokyo Shibaura Electric Co

Also Published As

Publication number Publication date
FR2439507A1 (fr) 1980-05-16
GB2037512A (en) 1980-07-09
IT7926513A0 (it) 1979-10-15
FR2439507B1 (fr) 1986-07-04
GB2037512B (en) 1983-09-01

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