JPS5357902A - Circuit for tuning heterodyne receiver - Google Patents

Circuit for tuning heterodyne receiver

Info

Publication number
JPS5357902A
JPS5357902A JP13243177A JP13243177A JPS5357902A JP S5357902 A JPS5357902 A JP S5357902A JP 13243177 A JP13243177 A JP 13243177A JP 13243177 A JP13243177 A JP 13243177A JP S5357902 A JPS5357902 A JP S5357902A
Authority
JP
Japan
Prior art keywords
tuning
circuit
heterodyne receiver
heterodyne
receiver
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.)
Pending
Application number
JP13243177A
Other languages
English (en)
Inventor
Kunuuto Kuruto
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of JPS5357902A publication Critical patent/JPS5357902A/ja
Pending 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
    • 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
    • H03J5/0263—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 the digital values being held in an auxiliary non erasable memory
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Circuits Of Receivers In General (AREA)
JP13243177A 1976-11-06 1977-11-04 Circuit for tuning heterodyne receiver Pending JPS5357902A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2650822A DE2650822C3 (de) 1976-11-06 1976-11-06 Abstimmschaltung für einen Überlagerungsempfänger

Publications (1)

Publication Number Publication Date
JPS5357902A true JPS5357902A (en) 1978-05-25

Family

ID=5992565

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13243177A Pending JPS5357902A (en) 1976-11-06 1977-11-04 Circuit for tuning heterodyne receiver

Country Status (7)

Country Link
JP (1) JPS5357902A (ja)
DE (1) DE2650822C3 (ja)
ES (1) ES463879A1 (ja)
FR (1) FR2370388A1 (ja)
GB (1) GB1539647A (ja)
IT (1) IT1086992B (ja)
SE (1) SE422264B (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4245351A (en) * 1979-07-30 1981-01-13 Rca Corporation AFT Arrangement for a phase locked loop tuning system
DE3912837A1 (de) * 1989-04-19 1990-10-25 Thomson Brandt Gmbh Regelschaltung

Also Published As

Publication number Publication date
DE2650822A1 (de) 1978-05-11
IT1086992B (it) 1985-05-31
GB1539647A (en) 1979-01-31
FR2370388A1 (fr) 1978-06-02
DE2650822B2 (de) 1979-07-12
SE422264B (sv) 1982-02-22
SE7712451L (sv) 1978-05-07
ES463879A1 (es) 1978-07-01
DE2650822C3 (de) 1980-03-13

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