NL7408982A - Receiver for picking up signal of particular frequency - has corrector cct to adjust to second frequency divider with variable dividing factor - Google Patents

Receiver for picking up signal of particular frequency - has corrector cct to adjust to second frequency divider with variable dividing factor

Info

Publication number
NL7408982A
NL7408982A NL7408982A NL7408982A NL7408982A NL 7408982 A NL7408982 A NL 7408982A NL 7408982 A NL7408982 A NL 7408982A NL 7408982 A NL7408982 A NL 7408982A NL 7408982 A NL7408982 A NL 7408982A
Authority
NL
Netherlands
Prior art keywords
receiver
frequency
circuit
divider
picking
Prior art date
Application number
NL7408982A
Other languages
Dutch (nl)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Priority to NL7408982A priority Critical patent/NL7408982A/en
Publication of NL7408982A publication Critical patent/NL7408982A/en

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
    • H03J7/18—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
    • H03J7/285—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 the counter or frequency divider being used in a phase locked loop
    • 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
    • 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
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • H03L7/195—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number in which the counter of the loop counts between two different non zero numbers, e.g. for generating an offset frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

Receiver for picking up a particular frequency, with a local mixing oscillator producing a definite frequency. A first frequency divider circuit is coupled to the oscillator, providing a fixed divisor. There is a second divider circuit designed as a counter, coupled to the first divider, providing an adjustable divisor. A detector circuit is coupled to the two divider circuits and to the output of a reference signal generator. The output of the detector is connected to the oscillator tuner. The receiver has a corrector circuit to adjust to the divisor in the second divider circuit. The connector circuit also contains a divisor adjustment circuit related to the middle frequency of the receiver.
NL7408982A 1974-07-03 1974-07-03 Receiver for picking up signal of particular frequency - has corrector cct to adjust to second frequency divider with variable dividing factor NL7408982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7408982A NL7408982A (en) 1974-07-03 1974-07-03 Receiver for picking up signal of particular frequency - has corrector cct to adjust to second frequency divider with variable dividing factor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7408982A NL7408982A (en) 1974-07-03 1974-07-03 Receiver for picking up signal of particular frequency - has corrector cct to adjust to second frequency divider with variable dividing factor

Publications (1)

Publication Number Publication Date
NL7408982A true NL7408982A (en) 1976-01-06

Family

ID=19821691

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7408982A NL7408982A (en) 1974-07-03 1974-07-03 Receiver for picking up signal of particular frequency - has corrector cct to adjust to second frequency divider with variable dividing factor

Country Status (1)

Country Link
NL (1) NL7408982A (en)

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