AT371640B - Abstimmschaltung fuer einen hochfrequenz -ueberlagerungsempfaenger mit gleichspannungsgesteuerter abstimmung - Google Patents

Abstimmschaltung fuer einen hochfrequenz -ueberlagerungsempfaenger mit gleichspannungsgesteuerter abstimmung

Info

Publication number
AT371640B
AT371640B AT0272378A AT272378A AT371640B AT 371640 B AT371640 B AT 371640B AT 0272378 A AT0272378 A AT 0272378A AT 272378 A AT272378 A AT 272378A AT 371640 B AT371640 B AT 371640B
Authority
AT
Austria
Prior art keywords
tuning
controlled
frequency overlay
overlay receiver
tuning circuit
Prior art date
Application number
AT0272378A
Other languages
English (en)
Other versions
ATA272378A (de
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
Application filed by Licentia Gmbh filed Critical Licentia Gmbh
Publication of ATA272378A publication Critical patent/ATA272378A/de
Application granted granted Critical
Publication of AT371640B publication Critical patent/AT371640B/de

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
    • H03J7/06—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 counters or frequency dividers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
    • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
    • 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
    • H03J5/0254—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 transfered to a D/A converter

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Superheterodyne Receivers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
AT0272378A 1977-04-26 1978-04-18 Abstimmschaltung fuer einen hochfrequenz -ueberlagerungsempfaenger mit gleichspannungsgesteuerter abstimmung AT371640B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2718472A DE2718472C2 (de) 1977-04-26 1977-04-26 Abstimmschaltung für einen Hochfrequenz-Überlagerungsempfänger mit gleichspannungsgesteuerter Abstimmung

Publications (2)

Publication Number Publication Date
ATA272378A ATA272378A (de) 1982-11-15
AT371640B true AT371640B (de) 1983-07-11

Family

ID=6007285

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0272378A AT371640B (de) 1977-04-26 1978-04-18 Abstimmschaltung fuer einen hochfrequenz -ueberlagerungsempfaenger mit gleichspannungsgesteuerter abstimmung

Country Status (7)

Country Link
US (1) US4201943A (de)
JP (1) JPS53133301A (de)
AT (1) AT371640B (de)
DE (1) DE2718472C2 (de)
FR (1) FR2389274A1 (de)
GB (1) GB1565795A (de)
IT (1) IT1094533B (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2912710C3 (de) * 1979-03-30 1982-02-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Abstimmschaltung für einen Empfänger, deren Abstimmlage von dem Stand eines Zählers bestimmt wird
US4291414A (en) * 1979-05-02 1981-09-22 Nippon Gakki Seizo Kabushiki Kaisha Radio receiver operable in station search mode or station select mode
DE3025358A1 (de) * 1980-07-04 1982-01-21 Deutsche Itt Industries Gmbh, 7800 Freiburg Regelsystem zum einstellen einer physikalischen groesse
US4450587A (en) * 1981-11-27 1984-05-22 Rca Corporation Tuning arrangement for providing relatively uniform automatic fine tuning sensitivity
DE3215747C2 (de) * 1982-04-28 1986-04-30 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Schaltungsanordnung zum Abstimmen von Hochfrequenzempfängern mit Hilfe einer Phase-Locked-Loop-Schaltung
US8688127B1 (en) 2011-03-16 2014-04-01 Sprint Spectrum L.P. Method and system for inter-frequency handoff
US11536749B2 (en) 2020-01-24 2022-12-27 Qualcomm Incorporated Voltage-to-current architecture and error correction schemes

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB933934A (en) * 1960-12-08 1963-08-14 Marconi Wireless Telegraph Co Improvements in or relating to frequency varying circuit arrangements
DE2229696B1 (de) * 1972-06-19 1973-05-10 SABA Schwarzwälder Apparate-Bau-Anstalt August Schwer Söhne GmbH, 7730 Villingen Schaltungsanordnung zur automatischen sendersuche
US3785865A (en) * 1972-08-03 1974-01-15 Foremost Mckesson Lactose refining process
DE2320530C2 (de) * 1973-04-21 1982-10-21 Blaupunkt-Werke Gmbh, 3200 Hildesheim Elektronische Sendersuchlaufautomatik für einen Rundfunkempfänger
US3906351A (en) * 1974-01-18 1975-09-16 Rca Corp Digital tuning of voltage control television tuners
GB1503334A (en) * 1974-02-25 1978-03-08 Matsushita Electric Ind Co Ltd Tuning apparatus using a voltage-dependent reactance element
JPS51118304A (en) * 1975-04-04 1976-10-18 Gen Instrument Corp Nonlinear circuit
US4017800A (en) * 1975-04-29 1977-04-12 General Instrument Corporation Delinearization circuit
JPS51118302A (en) * 1975-04-04 1976-10-18 Gen Instrument Corp Electronic tuner
DE2556486C3 (de) * 1975-12-16 1981-03-19 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Abstimmschaltung für Hochfrequenzempfangsgeräte
DE2557856C3 (de) * 1975-12-22 1980-11-13 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Abstimmschaltung für Hochfrequenzempfangsgeräte

Also Published As

Publication number Publication date
FR2389274B1 (de) 1984-10-19
IT7822705A0 (it) 1978-04-26
US4201943A (en) 1980-05-06
ATA272378A (de) 1982-11-15
GB1565795A (en) 1980-04-23
DE2718472C2 (de) 1986-05-15
DE2718472A1 (de) 1978-11-02
JPS6129170B2 (de) 1986-07-04
FR2389274A1 (fr) 1978-11-24
IT1094533B (it) 1985-08-02
JPS53133301A (en) 1978-11-21

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee
EIH Change in the person of patent owner
ELJ Ceased due to non-payment of the annual fee