JPS5525232A - Synthesizer receiver - Google Patents

Synthesizer receiver

Info

Publication number
JPS5525232A
JPS5525232A JP9757378A JP9757378A JPS5525232A JP S5525232 A JPS5525232 A JP S5525232A JP 9757378 A JP9757378 A JP 9757378A JP 9757378 A JP9757378 A JP 9757378A JP S5525232 A JPS5525232 A JP S5525232A
Authority
JP
Japan
Prior art keywords
oscillator
oscillation
oscillation frequency
frequency
circuit
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
JP9757378A
Other languages
Japanese (ja)
Inventor
Takashi Ooyama
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.)
BERUTETSUKU KK
Beltek KK
Original Assignee
BERUTETSUKU KK
Beltek 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 BERUTETSUKU KK, Beltek KK filed Critical BERUTETSUKU KK
Priority to JP9757378A priority Critical patent/JPS5525232A/en
Publication of JPS5525232A publication Critical patent/JPS5525232A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Abstract

PURPOSE:To improve the C/N by giving a forced change from outside to the oscillation frequency for the variable oscillator of the local oscillator and then carrying out the fine adjustment through detection of the unlocked state of the loop. CONSTITUTION:In the superheterodyne receiver adopting (PLL) for the local oscillation circuit, the variable capacitor to vary the oscillation frequency of the voltage control variable frequency oscillator 6 and the mu tuner are interlocked to the input antenna coil and others of high frequency amplification part 1. And clock oscillator 13 gives the code to decide the oscillation frequency to counter 12 which controls the division ratio of programable divider 11 controlling the oscillation frequency of oscillator 6. The presence or absence of the oscillation output of oscillator 13 is controlled by switching circuit 14. And circuit 14 is actuated by the unlock signal within the PLL.
JP9757378A 1978-08-10 1978-08-10 Synthesizer receiver Pending JPS5525232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9757378A JPS5525232A (en) 1978-08-10 1978-08-10 Synthesizer receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9757378A JPS5525232A (en) 1978-08-10 1978-08-10 Synthesizer receiver

Publications (1)

Publication Number Publication Date
JPS5525232A true JPS5525232A (en) 1980-02-22

Family

ID=14195972

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9757378A Pending JPS5525232A (en) 1978-08-10 1978-08-10 Synthesizer receiver

Country Status (1)

Country Link
JP (1) JPS5525232A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100441266B1 (en) * 1997-12-24 2004-10-08 주식회사 팬택앤큐리텔 Circuit for oscillating local frequency in wireless subscribe network system, especially generating 170 mhz local frequency

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100441266B1 (en) * 1997-12-24 2004-10-08 주식회사 팬택앤큐리텔 Circuit for oscillating local frequency in wireless subscribe network system, especially generating 170 mhz local frequency

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