JPS55153423A - Fm receiver of frequency synthesizer - Google Patents

Fm receiver of frequency synthesizer

Info

Publication number
JPS55153423A
JPS55153423A JP6134079A JP6134079A JPS55153423A JP S55153423 A JPS55153423 A JP S55153423A JP 6134079 A JP6134079 A JP 6134079A JP 6134079 A JP6134079 A JP 6134079A JP S55153423 A JPS55153423 A JP S55153423A
Authority
JP
Japan
Prior art keywords
frequency
circuit
electromagnetic waves
broadcast
output
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.)
Granted
Application number
JP6134079A
Other languages
Japanese (ja)
Other versions
JPS5910087B2 (en
Inventor
Tetsuo Takahashi
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.)
TRIO KENWOOD CORP
Kenwood KK
Original Assignee
TRIO KENWOOD CORP
Kenwood KK
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 TRIO KENWOOD CORP, Kenwood KK filed Critical TRIO KENWOOD CORP
Priority to JP6134079A priority Critical patent/JPS5910087B2/en
Publication of JPS55153423A publication Critical patent/JPS55153423A/en
Publication of JPS5910087B2 publication Critical patent/JPS5910087B2/en
Expired 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
    • H03J7/06—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
    • H03J7/065—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 the counter or frequency divider being used in a phase locked loop

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To enable to receive the broadcast having a fragmentary frequency at a part of Europe, by providing the reception detecting circuit to detect the FM detection output and the reference oscillator having the function of voltage controlled oscillator. CONSTITUTION:The broadcast electromagnetic waves are present near the tuning frequency corresponding to the frequency dividing ratio of the variable frequency divider 8 set at the frequency dividing ratio set circuit 14, a given level of electric field strength is given, and when the output of the FM detection circuit 4 is detected with the reception detecting circuit 17 for the tuning within a given range, the change-over switch 20 is switched to the smoothing circuit side. Accordingly, the DC component in the output of the detection circuit 4 changes the oscillating frequency of the crystal oscillator 16 being the reference oscillator. Further, it is operated to be tuned to the broadcast electromagnetic waves operating the reception detecting circuit 17. Thus, reception is made possible even to the broadcast electromagnetic waves having a fragmentary frequency present at a part of Europe.
JP6134079A 1979-05-18 1979-05-18 Frequency synthesizer FM receiver Expired JPS5910087B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6134079A JPS5910087B2 (en) 1979-05-18 1979-05-18 Frequency synthesizer FM receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6134079A JPS5910087B2 (en) 1979-05-18 1979-05-18 Frequency synthesizer FM receiver

Publications (2)

Publication Number Publication Date
JPS55153423A true JPS55153423A (en) 1980-11-29
JPS5910087B2 JPS5910087B2 (en) 1984-03-07

Family

ID=13168294

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6134079A Expired JPS5910087B2 (en) 1979-05-18 1979-05-18 Frequency synthesizer FM receiver

Country Status (1)

Country Link
JP (1) JPS5910087B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS581336A (en) * 1981-06-26 1983-01-06 Sanyo Electric Co Ltd Am receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS581336A (en) * 1981-06-26 1983-01-06 Sanyo Electric Co Ltd Am receiver

Also Published As

Publication number Publication date
JPS5910087B2 (en) 1984-03-07

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