JPS54129913A - Signal reception system - Google Patents

Signal reception system

Info

Publication number
JPS54129913A
JPS54129913A JP3836478A JP3836478A JPS54129913A JP S54129913 A JPS54129913 A JP S54129913A JP 3836478 A JP3836478 A JP 3836478A JP 3836478 A JP3836478 A JP 3836478A JP S54129913 A JPS54129913 A JP S54129913A
Authority
JP
Japan
Prior art keywords
frequency
band
oscillator
signal
input terminal
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
JP3836478A
Other languages
Japanese (ja)
Inventor
Kenzo Tanabe
Masashi Sugano
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3836478A priority Critical patent/JPS54129913A/en
Publication of JPS54129913A publication Critical patent/JPS54129913A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To make it possible to change a receiver receiving a single-frequency signal into one receiving a multi-frequency signal by bearing specific relation between the IF of an AM band and that of a FM band. CONSTITUTION:A signal from an AM local oscillator is applied to one input terminal of phase comparator 2 via input terminal 1, and a signal of a frequency one N-th as high as an input frequency is applied from divided to the other input terminal of comparator 2, whose output is applied to voltage control oscillator 4 with the function of a FM local oscillator via LPF3. The output of this oscillator 4 is supplied to divider 5 to form a phase control loop, thereby making it possible to increase the oscillation frequency of oscillator 4 N times as high as the input frequency at terminal 1. Consequently, specific relation is born between the IF of the AM band and that of the FM band to make it possible to change a single-frequency receiver into multi-frequency one.
JP3836478A 1978-03-31 1978-03-31 Signal reception system Pending JPS54129913A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3836478A JPS54129913A (en) 1978-03-31 1978-03-31 Signal reception system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3836478A JPS54129913A (en) 1978-03-31 1978-03-31 Signal reception system

Publications (1)

Publication Number Publication Date
JPS54129913A true JPS54129913A (en) 1979-10-08

Family

ID=12523217

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3836478A Pending JPS54129913A (en) 1978-03-31 1978-03-31 Signal reception system

Country Status (1)

Country Link
JP (1) JPS54129913A (en)

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