AU4988672A - Improvements in tuning r. f. receivers - Google Patents

Improvements in tuning r. f. receivers

Info

Publication number
AU4988672A
AU4988672A AU49886/72A AU4988672A AU4988672A AU 4988672 A AU4988672 A AU 4988672A AU 49886/72 A AU49886/72 A AU 49886/72A AU 4988672 A AU4988672 A AU 4988672A AU 4988672 A AU4988672 A AU 4988672A
Authority
AU
Australia
Prior art keywords
tuning
receivers
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
AU49886/72A
Other versions
AU466556B2 (en
Inventor
Schimmeyer Richard
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.)
Nokia Services Ltd
Original Assignee
Standard Telephone and Cables Pty Ltd
Standard Telephone and Cables PLC
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 Standard Telephone and Cables Pty Ltd, Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables Pty Ltd
Publication of AU4988672A publication Critical patent/AU4988672A/en
Application granted granted Critical
Publication of AU466556B2 publication Critical patent/AU466556B2/en
Expired legal-status Critical Current

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
    • H03J7/28—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/20—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a harmonic phase-locked loop, i.e. a loop which can be locked to one of a number of harmonically related frequencies applied to it

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)
AU49886/72A 1971-12-22 1972-12-11 Improvements in tuning r. f. receivers Expired AU466556B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEDE821640 1971-12-22
DE19712164015 DE2164015A1 (en) 1971-12-22 1971-12-22 PROCEDURE AND ARRANGEMENT FOR TUNING HF RECEIVERS, IN PARTICULAR TELEVISION RECEIVERS

Publications (2)

Publication Number Publication Date
AU4988672A true AU4988672A (en) 1974-06-13
AU466556B2 AU466556B2 (en) 1975-10-30

Family

ID=5828922

Family Applications (1)

Application Number Title Priority Date Filing Date
AU49886/72A Expired AU466556B2 (en) 1971-12-22 1972-12-11 Improvements in tuning r. f. receivers

Country Status (4)

Country Link
AU (1) AU466556B2 (en)
DE (1) DE2164015A1 (en)
FR (1) FR2170552A5 (en)
GB (1) GB1417588A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4616191A (en) * 1983-07-05 1986-10-07 Raytheon Company Multifrequency microwave source
IT1251498B (en) * 1991-09-18 1995-05-15 Minnesota Mining & Mfg LEUCO CIAN CHROMOGENIC DYES FOR PHOTOTHERMOGRAPHIC EMULSIONS

Also Published As

Publication number Publication date
AU466556B2 (en) 1975-10-30
FR2170552A5 (en) 1973-09-14
DE2164015A1 (en) 1973-07-19
GB1417588A (en) 1975-12-10

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