JPS5752207A - Frequency modulation demodulating circuit - Google Patents

Frequency modulation demodulating circuit

Info

Publication number
JPS5752207A
JPS5752207A JP12756080A JP12756080A JPS5752207A JP S5752207 A JPS5752207 A JP S5752207A JP 12756080 A JP12756080 A JP 12756080A JP 12756080 A JP12756080 A JP 12756080A JP S5752207 A JPS5752207 A JP S5752207A
Authority
JP
Japan
Prior art keywords
phase synchronizing
output
loop
frequency modulation
demodulating 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
JP12756080A
Other languages
Japanese (ja)
Inventor
Tsuneaki Matoba
Masaharu Nishiwaki
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP12756080A priority Critical patent/JPS5752207A/en
Publication of JPS5752207A publication Critical patent/JPS5752207A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/24—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
    • H03D3/241—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To greatly improve a threshold level, by outputting an output of a phase synchronizing loop through a buffer means and a high-pass filter, in an FM demodulator using the phase synchronizing loop. CONSTITUTION:An output of demodulation by a phase synchronizing loop, i.e. an output of a loop filter 3 is provided to a VCO4, also is provided to a high-pass filter 7 through a buffer amplifier 6, a high band attenuated by the phase synchronizing loop is apparently raised, and the frequency characteristics are made flat up to around the subcarrier of an FM signal. Accordingly, a threshold level is greatly improved.
JP12756080A 1980-09-12 1980-09-12 Frequency modulation demodulating circuit Pending JPS5752207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12756080A JPS5752207A (en) 1980-09-12 1980-09-12 Frequency modulation demodulating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12756080A JPS5752207A (en) 1980-09-12 1980-09-12 Frequency modulation demodulating circuit

Publications (1)

Publication Number Publication Date
JPS5752207A true JPS5752207A (en) 1982-03-27

Family

ID=14963037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12756080A Pending JPS5752207A (en) 1980-09-12 1980-09-12 Frequency modulation demodulating circuit

Country Status (1)

Country Link
JP (1) JPS5752207A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6046208U (en) * 1983-09-08 1985-04-01 株式会社　北斗型枠製作所 Formwork for U-shaped groove molding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6046208U (en) * 1983-09-08 1985-04-01 株式会社　北斗型枠製作所 Formwork for U-shaped groove molding

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